The value of sin^(-1)[ cos {cos^(-1)(cos...

The value of `sin^(-1)[ cos {cos^(-1)(cosx)+sin^(-1)(sinx)}]` where `"x"in (pi/2,pi)` is equal to a)`pi/2`b)`-pi`c)`pi` d)`-pi/2`

A

`pi/2`

B

`-pi`

C

`pi`

D

`-pi/2`

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The correct Answer is:

D

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