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

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

A

0

B

`(pi)/(2)`

C

`(pi)/(4)`

D

`pi`

Text Solution

Verified by Experts

The correct Answer is:
D
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