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

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

A

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

B

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

C

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

D

none of these

Text Solution

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The correct Answer is:
C
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -Competitive Thinking
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