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cos^(-1)[cos{2cot^(-1)(sqrt2-1)}] is equ...

`cos^(-1)[cos{2cot^(-1)(sqrt2-1)}]` is equal to a)`sqrt2-1` b)`pi/4` c)`(3pi)/4` d)None of these

A

`sqrt2-1`

B

`pi/4`

C

`(3pi)/4`

D

None of these

Text Solution

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The correct Answer is:
C
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