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12=27.73cos(x)

 Sep 23, 2015
 #1
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12=27.73cos(x)

cos(x)=12/27.73=.432744

x=64.36

 

CPhill: Please verify this.

 Sep 23, 2015
 #2
avatar+130516 
+5

12=27.73cos(x)    divide both sides by 27.73   and we have

 

cos(x)   = 12 / 27.73         to find the solution for x, we need to take the cosine inverse

 

cos-1 (12/ 27.73)   = x =  about 64.36°

 

[Also, this could be the same angle in the 4th quadrant = about 295.64°]

 

 

 

cool cool cool

 Sep 23, 2015

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