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Calculator Trigonometry Practice Questions

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Updated on Oct 1, 2011

Read the following study guide for a concept review:

Calculator Trigonometry Study Guide

Practice Questions

Estimate each of the trigonometric values to three decimal places with a calculator.

1. sin(50°)
2. cos(30°)
3. tan(85°)
4. sin(315°)
5. cos( –80°)
6. tan(l4°)
7.
8. cos(π)
9.
10.
11. cos(8.63)
12.

 

Evaluate each trigonometric value to three decimal places with a calculator.

13. sec(18°)
14. csc(412°)
15. cot(–23.1°)
16.
17.
18. cot(2.61)

 

Use a calculator to estimate the length x in each triangle.

19. Calculator Trigonometry
20. Calculator Trigonometry
21. Calculator Trigonometry
22. Calculator Trigonometry
23. Calculator Trigonometry
24. Calculator Trigonometry
25. Calculator Trigonometry
26. Calculator Trigonometry
27. Calculator Trigonometry

Answers

1. sin(50°) ≈ 0.766
2. cos(30°) ≈ 0.866
3. tan(85°) ≈ 11.430
4. sin(315°) ≈ –0.707
5. cos(–80°) ≈ 0.174
6. tan(14°) ≈ 0.249
7. sin ≈ 0.588
8. cos(π) = –1
9. tan = 1
10. sin ≈ –0.309
11. cos(8.63) ≈ –0.700
12. tan ≈ 1.732
13. sec(18°) ≈ 1.051
14. csc(412°) ≈ 1.269
15. cot(–23.1°) ≈ –2.344
16. sec ≈ 1.015
17. csc ≈ –1.414
18. cot(2.61) ≈ –1.701
19. x ≈ 1.452 ft.
20. x ≈ 6.180 in.
21. x ≈ 11.706 ft.
22. x ≈ 5.016 in.
23. x = 4 ft.
24. x ≈ 14.142 ft.
25. x ≈ 140.042 ft.
26. x ≈ 12.361 ft.
27. x ≈ 20.840 m
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