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 X is the bottom 25 is angle, and 13 is hypotenuse.

 Dec 17, 2020
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                                  cosine 25o = X / 13  

 

                                  X  =  13 • cos 25o  

 

                                  X  =  13 •  0.9063  

 

                                  X  =  11.782  

 Dec 17, 2020

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