cos^(-1) (cos (2 cot^(-1) (sqrt2 -1))) i...

`cos^(-1) (cos (2 cot^(-1) (sqrt2 -1)))` is equal to

A

`sqrt2 - 1`

B

`pi/4`

C

`(3pi)/4`

D

None of these

Verified by Experts

The correct Answer is:

C

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