tan^-1(x/y)-tan^-1((x-y)/(x+y)) is equa...

`tan^-1(x/y)-tan^-1((x-y)/(x+y))` is equal to :

A

`pi/(2)`

B

`pi/(3)`

C

`pi/(4)`

D

`-(3pi)/(4)`

Verified by Experts

The correct Answer is:

C

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