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Find the missing length. Round to the nearest tenth

Find the missing length. Round to the nearest tenth-example-1

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Answer:

x ≈ 30.9 (Choice D)

Explanation:

We can use cosine for solving this question:

cos (61°) = 15 / x

x = 15 / cos (61°)

x = 30.93998011

x ≈ 30.9 (Choice D)

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