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If cos(2tan^(-1)x)=1/2 then value of x i...

If `cos(2tan^(-1)x)=1/2` then value of x is

A

`pmsqrt(3)`

B

`pm(1)/(sqrt(3))`

C

`sqrt(3)-1`

D

`1-(1)/(sqrt(3))`

Text Solution

Verified by Experts

The correct Answer is:
B
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