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? |
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| 22. | If sin(x) = 0.8, what is the hypotenuse of the triangle in Figure 5.34? |
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| 23. | If sin(x) =  , what is the length A of the side adjacent to angle x in Figure 5.35? |
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| 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? |
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| 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? |
Answers
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| 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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