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Sometimes we are just concerned with fin...

Sometimes we are just concerned with finding integral solutions to equations. Consider the equation
`tan^(-1).(1)/m+tan^(-1).(1)/n=tan^(-1).(1)/lambda`, where `m,n, lambda in N`
For `lambda=11`, an integral pair (m,n) satisfying the equation is

A

`(12,72)`

B

`(12, 133)`

C

`(13,74)`

D

`(13,136)`

Text Solution

Verified by Experts

The correct Answer is:
B
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