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4tan^(-1)""(1)/(5)-tan^(-1)""(1)/(239)=...

`4tan^(-1)""(1)/(5)-tan^(-1)""(1)/(239)=`

A

`pi`

B

`(pi)/(2)`

C

`(pi)/(3)`

D

`(pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
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