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Prove: 4 tan^(-1) (1/5 )- tan^(-1)( 1/2...

Prove: ` 4 tan^(-1) (1/5 )- tan^(-1)( 1/239) = pi/4`

A

`(pi)/(6)`

B

`(pi)/(4)`

C

`(pi)/(3)`

D

`(pi)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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