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If sin^(-1)(x-1)+cos^(-1)(x-3) +tan^(-1)...

If `sin^(-1)(x-1)+cos^(-1)(x-3) +tan^(-1)(x/(2-x^2))= cos^(-1)k+pi` then the value of k is A)1 B)`-1/sqrt2` C)`1/sqrt2` D)None of these

A

1

B

`-1/sqrt2`

C

`1/sqrt2`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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