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If cos^(2)x-2cosx=4sinx-sinx-sin2x,then ...

If `cos^(2)x-2cosx=4sinx-sinx-sin2x`,then x=

A

`npi-tan^(-1)(-(1)/(2))`

B

`npi-tan^(-1)((1)/(2))`

C

`npi+tan^(-1)2`

D

`npi-tan^(-1)2`

Text Solution

Verified by Experts

The correct Answer is:
B
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