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If tan^(-1) x + tan^(-1) y =(pi)/(4) the...

If `tan^(-1) x + tan^(-1) y =(pi)/(4)` then...

A

`x+y+x y=1`

B

`x+y-x y=1`

C

`x+y+x y+1=0`

D

`x+y-x y+1=0`

Text Solution

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The correct Answer is:
A
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