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tan^(-1)(1)+tan^(-1)(2)+tan^(-1)(3) =...

`tan^(-1)(1)+tan^(-1)(2)+tan^(-1)(3)` = _______

A

`pi`

B

`(5pi)/4`

C

`pi/2`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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