TI -30X IIS User Manual

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Front 11” 8.5” TI-30X II ...

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TI-30X Ú S: A Guide for Teachers Developed by Texas Instruments Incorporated Activities developed by Gary Hanson and Aletha Paskett Illustrated by Jay Garrison ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers ii About the Authors Gary Hanson and Aletha Paskett are math teachers in the Jordan Independent School District in Sandy, Utah. They developed the Activities s...

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 © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X IIS: A Guide for Teachers iii How the Teacher Guide is Organized This guide consists of two sections: Activities and How to Use the TI-30X Ù S. The Activities section is a collection of activit...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers iv Two-Line Display The first line (entry line) displays an entry of up to 88 digits (47 digits for the stat and constant entry lines). Entries begin on the left; tho...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers v Resetting the TI-30X Ú S Pressing & and - simultaneously or pressing %  and then selecting Y (yes) resets the calculator. Resetting the calculator...

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Table of Contents  © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers vi About the Authors ii About the Teacher Guide iii About the TI-30X ÖSiv Activities The Better Batter — The FIX Key 2 Star Voyage — Scientific No...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 1 The Better Batter — The FIX Key 2 Star Voyage — Scientific Notation 6 Trig Functions 10 What’s My Score? — 1-Variable Statistics 14 Heart Rates — 1-Variable Stat...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 2 Overview Students use % ‚ on the TI-30X Ù S to change numbers to different place values. Students calculate batting averages using the TI-30X Ù S and then round...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 3 Player Number of Hits Number of Times at Bat Batting Average C. Ripken 122 368 0.332 Puckett 119 363 0.328 Molitor 119 364 0.327 Greenwell 104 334 0.311 Tartabull 103 311 ...

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The Better Batter — The FIX Key Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 4 Problems 1. Round the following numbers to 3 decimal places. a. 2.35647...

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The Better Batter — The FIX Key Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 5 Problem You are going to play Virtual Baseball. You need to select 9 pl...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 6 Overview Students investigate scientific notation by changing numbers into scientific notation, and then using them in calculations. Math Concepts • scientific notation ...

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© 1999 T EXAS I NSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 7 Activity Present the following problem to students: You are a captain of a starship. You have been assigned to go to Alpha Centauri and you have 5 years to get there. The d...

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Star Voyage — Scientific Notation Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 8 Problems 1. Write the following numbers in scientific notation. Standar...

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Star Voyage — Scientific Notation Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 9 Problem You are a captain of a starship. You have been assigned to go t...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 10 Overview Students practice solving sine, cosine, and tangent ratios, and solve problems involving trigonometric ratios. Math Concepts • multiplication • division •...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 11 Activity Present the following problem to students: You need to build a ramp to your front door. The distance from the ground to the bottom of the door is 1.5 feet. You d...

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Trig Functions Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 12 Problems 1. Find the trigonometric ratios for the triangle. Round to the nearest hundredt...

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Trig Functions Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 13 Problem You need to build a ramp to your front door. The distance from the ground to the ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 14 Overview Students use the given test scores to find averages. Math Concepts • averages Materials • TI-30X ÙS • pencil • student activity Introduction Discuss fi...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 15 2. Now find the average of your friend’s scores. Remember to put 2 as the frequency for 89 and 1 for all others. 3. Who won? Your friend: 93 (You had 92.6.) ³ 1. Press...

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What’s My Score? — 1-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 16 Problems 1. You and your friend are having a contest. Whoev...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers 1 7 Overview Students use the statistics functions of the TI-30X Ù S calculator to investigate the effect of exercise on heart rate. Math Concepts • mean, minimum, ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers 18 4. Check the statistics calculations. After students display Ò x (Sigma x ), explain that Ò x is the sum of all the heart rates. Ask students: • How many hear...

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Heart Rates — 1-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers 19 Problem What do you think the average heart rate is for someone ...

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Heart Rates — 1-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers 20 4. Use this table to record your class or group data (running). ...

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Heart Rates — 1-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers 21 7. Use this table to record your class or group data (jumping). ...

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Heart Rates — 1-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X Ù S: A Guide for Teachers 22 11. Now make a histogram for each of the 3 sets of data you coll...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 23 Overview Students use WNBA statistics to explore the relationship between 2 variables. They use the TI-30X Ù S to compute the regression equation and evaluate some valu...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 24 3. Calculate the statistical data. You may want to fix the decimal to 2 places before doing the statistical calculations.  1. Press % ‚. F0123456789 2. Press 2 . As...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 25 7. Now calculate how many points you would expect a player to score if she plays 35 minutes a game. 8. Discuss the correlation as a class. Ask students: • Are there ot...

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WNBA Stats — 2-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 26 Problem Do you think WNBA playing time (in minutes per game) is rel...

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WNBA Stats — 2-Variable Statistics Name ___________________________ Date ___________________________ © 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 2 7 Extension Use the calculator to investigate the correlation of th...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 28 TI-30X Ú S Basic Operations 29 Clear, Insert, and Delete 33 Basic Math 36 Order of Operations and Parentheses 40 Constant 43 Decimals and Decimal Places 45 Memory 47 Fr...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 29 Keys 1. & turns on the calculator. 2. % turns on the 2nd indicator and accesses the function shown above the next key you press. 3. % ' turns off the calc...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 30 Enter 46 N 23. Change 46 to 41. Change 23 to 26 and complete the operation. Enter 81 + 57 and complete the operation. Scroll to see your previous entries. % ¥ ! " ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 31 Reset the calculator. % ¨ Press Display % ¨ RESET:RESET: N YN Y -- DEG " RESET:RESET: N YN Y -- DEG < MEM CLEAREDMEM CLEARED DEG - ~~ DEG Pressing & ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 32 Use Last Answer (Ans) to calculate (2+2) 2 . % ª Press Display 2 T 2 < 2+22+2 ' 4.4. DEG % ª F < AnAnss 22 ' 16.16. DEG Last Answer (Ans) ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 33 Keys 1. - clears characters and error messages. Once the display is clear, it moves the cursor to the most recent entry. 2. % f lets you insert a character at the cur...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 34 Enter 4569 + 285, and then change it to 459 + 2865. Complete the problem. J % ‘ Press Display 4569 T 285 4569+2854569+285 DEG ! ! ! ! ! ! J 459+285459+285 DEG " &q...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 35 Enter 21595. Clear the 95. Clear the entry. - Press Display 21595 2159521595 DEG ! ! - (Clear to right) 215215 DEG - (Clear entry) ~~ DEG Clear ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 36 Keys 1. T adds. 2. U subtracts. 3. V multiplies. 4. W divides. 5. < completes the operation or executes the command. 6. M lets you enter a negative number. 7. % ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 3 7 Find: 2 + 54 ½ 6 = 16 x 21 = 78 P 2 = 12 x (5 + 6) = T U V W < Press Display 2 T 54 U 6 < 2+54-62+54-6 ' 5050 .. DEG 16 V 21 < 1616 ** 2121 ' 336.33...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 38 The temperature in Utah was L3¡ C at 6:00 a.m. By 10:00 a.m. the temperature had risen 12¡ C. What was the temperature at 10:00 a.m.? M Press Display M 3 T 12 < L 3+...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 39 Mike makes $80 per week. He saves 15% of his earnings. How much does Mike save per week? % £ Press Display 15 1515 DEG % £ V 80 < 15%15% ** 8080 ' 12.12. DEG P...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 40 Keys 1. D opens a parenthetical expression. 2. E closes a parenthetical expression. Notes • The examples on the transparency masters assume all default settings. �...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 41 1 (first) Expressions inside D E 2 Functions that need a E and precede the expression, such as the >, A, or % ’ menu items 3 Functions entered after the expressi...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 42 1 + 2 x 3 = T V D E Press Display 1 T 2 V 3 < 1+2*31+2*3 ' 7.7. DEG (1 + 2) x 3 = Press Display D 1 T 2 E V 3 < ((1+21+2))*3*3 ' 9.9. DEG Order of ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 43 Keys 1. % l turns on the constant mode and lets you define a constant. A K displays when the constant mode is on. 2. < places the contents of K at the end of t...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 44 Three people babysit for $3.25 each per hour. First person works 16 hours. Second person works 12 hours. Third person works 17 hours. How much did each person earn? % ™...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 45 Keys 1. 8 enters a decimal point. 2. % ‚ displays the following menu, which lets you set the number of decimal places. F 0 1 2 3 4 5 6 7 8 9 F Sets floating decimal...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 46 Round 12.345 to the hundredths place, to the tenths place, and then cancel the FIX setting. 8 % © Press Display 12 8 345 12.34512.345 DEG % © FF 01234567890123456789 __...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 4 7 Keys 1. L displays the following menu of variables. A B C D E Lets you select a variable in which to store the displayed value. The new variable replaces any previous...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 48 Test scores: 96, 76, 85. Weekly scores: 92, 83, 97, and 86. Find the average of test and weekly scores. Find the final average. L z % ¦ Press Display 96 T 76 T 85 < 9...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 49 Which would be the better buy: 3 cassette tapes for $7.98, or 4 cassette tapes for $9.48? L % § Press Display 7 8 98 W 3 < 7.98/37.98/3 ' ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 50 Shop Purchases Qty Cost A shirts 2 $13.98 ea. B ties 3 $7.98 ea. C belt 1 $6.98 suspenders 1 $9.98 How much did you spend at each shop, and how much did you spend altoget...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 51 Press Display L % § L " < AnsAns ¹ BB ' 23.9423.94 DEG 6 8 98 T 9 8 98 < 66..98+998+9..9898 ' 16.9616.9...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 52 Keys 1. N lets you enter mixed numbers and fractions. 2. % O converts a simple fraction to a mixed number or a mixed number to a simple fraction. 3. % j converts a...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 53 At the party, you ate 5 / 6 of the pepperoni pizza and 1 / 10 of the sausage pizza. How much pizza did you eat? N Press Display 5 N 6 T 1 N 10 < 55®6+16+1®1010 &...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 54 A baby weighed 4 3 / 8 pounds at birth. In the next 6 months, she gained 2 3 / 4 pounds. How much does she weigh? N Press Display 4 N 3 N 8 T 2 N 3 N 4 < 44®33®8...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 55 Sam is making his birthday cake. The recipe calls for 3 1 / 2 cups of flour. He has only a 1 / 2 -cup measuring cup. To find out how many times Sam must use his measur...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 56 Juan swims 20 laps in 5.72 minutes. Mary swims 20 laps in 5 3 / 4 minutes. Change Mary’s time to a decimal to determine who swims faster. % “ Press Display 5 N 3 N ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 5 7 Change 2.25 to its fractional equivalent. % “ Press Display 2 8 25 % “ < 2.252.25 ¾¾ FF ½½ ¾¾ DD ' 22−1/41/4 DEG D...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 58 Keys 1. g displays the value of pi rounded to 10 digits (3.141592654). Notes • The examples on the transparency masters assume all default settings. • Internally, ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 59 Use this formula to find the amount of border you need if you want to put a circular border all the way around the tree. g Press Display 2 V g V 1.5 < 22 ** p ** 1.51....

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 60 Use this formula to find how much of a lawn would be covered by the sprinkler. Round your answer to the nearest whole number, and then return to floating decimal mode. g ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 61 Keys 1. F squares the value. 2. % b calculates the square root. 3. % c calculates the specified root (x) of the value. 4. a calculates the reciprocal. 5. G raise...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 62 Use this formula to find the size of the tarpaulin needed to cover the entire baseball infield. A = x 2 = 27.4 2 FG Press Display 27.4 F < or 27.427.4 22 &apo...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 63 Use this formula to find the length of the side of a square clubhouse if 3m 2 of carpet would cover the floor. Round your answer to 0 decimal places. L = x = 3 % œ ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 64 Use this formula to find the volume of a cube with sides 2.3 meters long. Change your answer to a fraction. V = L 3 = 2.3 3 G Press Display 2 8 3 G 3 < 2.3^32.3^3 &ap...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 65 Fold a piece of paper in half, in half again, and so on until you cannot physically fold it in half again. How many sections would there be after 10 folds? After 15 folds...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 66 If the volume of a cube is 125 cm 3 , what is the length of each side? % ¡ Press Display 3 % ¡ 125 < 33 xx ‹‹125125 5.5. DEG Roots ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 6 7 The chart below shows the amount of time spent building model ships. a Time Portion Spent Completed Ships Building Per Hour Sailing 10 hrs. ? Steam 5 hrs. ? Luxury ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 68 Keys 1. H displays the following menu of functions. nPr Calculates the number of possible permutations. nCr Calculates the number of possible combinations. ! Calcula...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 69 You have space for 2 books on your bookshelf. You have 4 books to put on the shelf. Use this formula to find how many ways you could place the 4 books in the 2 spaces. 4 ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 70 Four different people are running in a race. Use this formula to find how many different ways they can place 1st and 2nd. 4 nPr 2 = x ABC D H AB and BA count as 2 permuta...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 71 Using the digits 1, 3, 7, and 9 only one time each, how many 4-digit numbers can you form? 4! = x 1379 ABCD H ABCD BACD CABD DABC ABDC BADC CADB DACB ACBD BCAD ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 72 Generate a sequence of random numbers. H Press Display H " " " % RAND RAND RANDIRANDI -- ______ DEG < < RAND RAND ' 0.8395886940.83...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 73 Set 1 as the current seed and generate a sequence of random numbers. H Press Display 1 L ! % rand rand -------- 310000.310000. DEG < 11 ¹ rand ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 74 Generate a random integer from 2 through 10. H Press Display H ! % RANDRAND RANDIRANDI ------ ____ DEG < 2 % ¤ 10 E % ANDI( 2, 10)ANDI( 2, 10) DEG < RANDI( 2...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 75 Keys 1. % t displays a menu from which you can select 1-VAR, 2-VAR or CLRDATA . 1-VAR Analyzes data from 1 set of data with 1 measured variable— x . 2-VAR A n...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 76 Five students took a math test. Using their scores, enter the data points—85, 85, 97, 53, 77. % ” v Press Display % ” 1-VAR1-VAR 2-VAR2-VAR & ---------- DEG &...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 7 7 Find the number of data points ( n ), the mean ( v ), the sample standard deviation ( s x ), the population standard deviation (s x ), the sum of the scores ( Gx ), and...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 78 Return to the first data point. Display the lowest score, drop it, and then find the new mean (v). Clear all data by exiting STAT mode. % ˜ Press Display v XX 11 =85=8...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 79 The table below shows the number of pairs of athletic shoes sold by a small shoe store. Enter this data as the data points. Month Total No.(x) Brand A (y) April 58 (...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 80 If the store sells 32 pairs of shoes in June, predict the June sales of Brand A. When finished, exit STAT mode and clear all data points. u % ˜ Press Display u ! % xx...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 81 Keys 1. @ calculates the tangent. 2. % \ calculates the inverse tangent. 3. ? calculates the cosine. 4. % [ calculates the inverse cosine. 5. > calculates th...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 82 Use this formula to find the distance from the lighthouse to the boat. Round your answer to the nearest whole number, and then return to floating decimal mode. @ Press D...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 83 Use this formula to find the angle of depression. Round your answer to the nearest tenth, and then return to floating decimal mode. TAN x = 600/2500 % Ÿ Press Display %...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 84 Use this formula to find how far the base of the ladder is from the house. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 5...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 85 Use this formula to find the angle of the ski jump. Round your answer to the nearest tenth, and then return to floating decimal mode. COS x = 453/500 %  Press Display...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 86 Use this formula to find the length of the ramp. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 1.5/SIN 12 > Press Displ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 8 7 Use this formula to find the angle of the conveyor belt. Round your answer to the nearest tenth, and then return to floating decimal mode. %  Press Display %  1...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 88 Keys 1. % d displays the following numeric notation mode menu. FLO Restores standard mode (floating decimal). SCI Turns on scientific mode and displays results as a n...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 89 Enter 12543, which will be in floating decimal notation (default), and alternate between scientific and engineering notations. %  Press Display 12543 %  " FL...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 90 The Earth is 1.496 x 108 kilometers from the Sun. Jupiter is 7.783 x 108 kilometers from the Sun. Enter the numbers in scientific notation and determine how far away the...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 91 Keys 1. A calculates the common logarithm (base 10). 2. B calculates the natural logarithm (base e , where e = 2.718281828459). 3. % ] calculates the common antil...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 92 Find log 23 rounded to 4 decimal places. Then find ln 23 rounded to 4 decimal places and return to floating decimal notation. A B Press Display A 23 E < log (23) log ...

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© 1999 T EXAS I NSTRUMENTS I NCORPORATED TI-30X ÙS: A Guide for Teachers 93 Find antilog 3.9824 rounded to 4 decimal places. Then find antiln 3.9824 rounded to 4 decimal places. When finished, return to floating decimal notation. %  %  Pre...