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# Trigonometry and Sine Practice Questions

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Read the following study guide for a concept review:

Trigonometry and Sine Study Guide

## Practice Questions

Find sin(x) for the angle x in each triangle.

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Find the sine of the angle x in each triangle.

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 21. If sin(x) = for the angle x in Figure 5.33, what is the length O of the opposite side? 22. If sin(x) = 0.8, what is the hypotenuse of the triangle in Figure 5.34? 23. If sin(x) = , what is the length A of the side adjacent to angle x in Figure 5.35? 24. Suppose sin(x) = 0.65 for the angle in Figure 5.36. What is the length of the side adjacent to the angle x? 25. Suppose the hypotenuse of a triangle with angle x is H = 15 inches long. If sin(x) = , what is the length of the side opposite x?

 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 O = 8 ft. 22 H = 20 in. 23 A = √875 ≈ 29.58 ft. 24 A = √924 ≈ 30.4 in. 25 O = 6 in.

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