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In triangle PQR, we have P = 90 degrees, QR = 20, and tan R = 2 sin R. What is PR?

 Jul 22, 2022
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QR is the hypotenuse, so:

 

tan R = PQ/PR      sin R = PQ/20

 

so  PQ/PR = 2*PQ/20   hence PR = 10  

 Jul 22, 2022

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