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Marty is proving that the following trigonometric identity is true:

 Feb 21, 2018

Best Answer 

 #1
avatar+7354 
+2

Since   \(1-\cos^2\theta=\sin^2\theta\)

 

The first line of his proof would be

 

\(\tan^2\theta\cdot\cos^2\theta=\sin^2\theta\)

.
 Feb 21, 2018
 #1
avatar+7354 
+2
Best Answer

Since   \(1-\cos^2\theta=\sin^2\theta\)

 

The first line of his proof would be

 

\(\tan^2\theta\cdot\cos^2\theta=\sin^2\theta\)

hectictar Feb 21, 2018

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