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Trigonometry
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OpenStudy (anonymous):
A 50-foot tree casts a shadow 75 feet long. How can you find sine for the angle of elevation that is determined by the sun and the top of the tree?
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OpenStudy (anonymous):
\[\sin \left(\tan ^{-1}\left(\frac{50}{75}\right)\right)=\frac{2}{\sqrt{13}}=0.5547 \]
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