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I am not sure how to solve this question:

cos(x) = 0.873

I am supposed to find all of the angles in the interval [0, 360] that satisfy the equation above. (Round approximations to the nearest tenth of a degree.)

 Apr 19, 2019
 #1
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cos x = .873

 

Take the arccos to find x

 

So

 

arccos (.873)  = x  ≈  29.2°

 

The other angle will be  [ 360 - 29.2]  ≈ 330.8°

 

 

cool cool cool

 Apr 19, 2019

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