The solution of the equation cos^(2)x-...

The solution of the equation
`cos^(2)x-2cosx=4sinx-sin2x,0lexlepi`, is

A

(a) `pi=cot^(-1)((1)/(2))`

B

(b) `pi-tan^(-1)(2)`

C

(c) `pi+tan^(-1)(-(1)/(2))`

D

(d) none of these

Verified by Experts

The correct Answer is:

C

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