If tan^(-1) (-x) + cos^(-1) ((-1)/(2))...

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

A

`sqrt(3)`

B

`(-1)/( sqrt3)`

C

`(1)/( sqrt3)`

D

`- sqrt3`

Verified by Experts

The correct Answer is:

C

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