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` How many positive integral solutions (m,n) exist for the eqution if `lambda=3`?A. TwoB. FourC. SixD. Eight

Sometimes we are just concerned with finding integral solutions to equ

1.	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` How many positive integral solutions (m,n) exist for the eqution if `lambda=3`?A. TwoB. FourC. SixD. Eight
Answer» Correct Answer - B

`tan^(-1)[(cosx)/(1+sinx)]`is equal to`pi/4-x/2,forx in (-pi/2,(3pi)/2)``pi/4-x/2,forx in (-pi/2,pi/2)``pi/4-x/2,forx in (-pi/2,pi/2)``pi/4-x/2,forx in (-(3pi)/2,pi/2)`
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