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The solution of the equation cos^2theta-...

The solution of the equation `cos^2theta-2costheta=4sintheta-sin2theta` where `theta in [0,pi]` is

A

`pi-a, tanalpha=1/2`

B

`pi-a, cotalpha=-1/2`

C

`pi-a, tanalpha=2`

D

`pi+a, cotalpha=2`

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A
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AAKASH INSTITUTE ENGLISH-TRIGNOMETRIC FUNCTIONS -Section-B (Objective Type Questions One option is correct)
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