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If tan^(-1)x+tan^(-1)y=(4pi)/5, find cot...

If `tan^(-1)x+tan^(-1)y=(4pi)/5,` find `cot^(-1)x+cot^(-1)ydot`

A

`pi`

B

`(pi)/(5)`

C

`(2pi)/(5)`

D

`(3pi)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
B
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