Given x^2=cos2theta Write tan^-1((sqrt(1...

Given `x^2=cos2theta` Write `tan^-1((sqrt(1+x^2)+sqrt(1-x^2))/(sqrt(1+x^2)-sqrt(1-x^2)))` in simplest form.

A

`pi/4+1/2cos^(-1)x^2`

B

`pi/4+cos^(-1)x^2`

C

`pi/4+1/2 cos^(-1)x`

D

`pi/4 -1/2 cos^(-1)x^2`

Verified by Experts

The correct Answer is:

A

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