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avatar+95 

Please help with this question. Thank you!

 Apr 24, 2019
 #1
avatar+19950 
+3

Cosine is adjacent/hypotenuse    you are given opposite and adjacent....

you can find the tan of the angle and then find the cosine of that angle...or calculate the hypotenuse with pythag theorem

 

hyp^2 = 75^2 +50^2     hyp = 90.139

then cos = adj/hyp = 75/90.138 = .83

 Apr 24, 2019
 #2
avatar+105277 
+2

We actually know two legs of a right triangle.....

We need to find the hypotenuse  = √[50^2 + 75^2 ] 

 

So....the cosine of the angle of elevation  =   75 / √[ 75^2 + 50^2 ]  ≈   0.83 

 

 

 

cool  cool cool 

 Apr 24, 2019

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