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In right triangle DEF, we have $\angle D = 25^\circ$, $\angle E = 90^\circ$, and \(EF = 19\). Find DE to the nearest tenth. You may use a calculator for this problem.

 
 Jan 14, 2022
 #1
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Tan D = opp/adj = EF / DE  

Tan 25 = 19 / DE

DE = 19 / tan(25) = ....................

 
 Jan 14, 2022

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