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

 May 26, 2021
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Sin law

 

19 / sin25  = DE / sin 65

sin 65o * 19 / sin 25o   = DE   

 May 26, 2021

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