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(Cos2theta)/(sin theta -cos theta)

 Mar 6, 2015

Best Answer 

 #2
avatar+118723 
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maybe this will help

 

$$cos 2\theta=cos^2\theta-sin^2\theta$$

 

and that is the difference of 2 squares. 

 Mar 7, 2015
 #2
avatar+118723 
+5
Best Answer

maybe this will help

 

$$cos 2\theta=cos^2\theta-sin^2\theta$$

 

and that is the difference of 2 squares. 

Melody Mar 7, 2015

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