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If cot^(-1)x-cot^(-1)y=0andcos^(-1)x+cos...

If `cot^(-1)x-cot^(-1)y=0andcos^(-1)x+cos^(-1)y=pi/2` then x + y = _______

A

`1/sqrt2`

B

1

C

0

D

`sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
D
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