Two angles of a triangle are `cot^-1 2` and `cot^-1 3,` then the third angle isA. `(pi)/(4)`B. `3(pi)/(4)`C. `(pi)/(6)`D. `(pi)/(3)`

Two angles of a triangle are `cot^-1 2` and `cot^-1 3,` then the third

1.	Two angles of a triangle are `cot^-1 2` and `cot^-1 3,` then the third angle isA. `(pi)/(4)`B. `3(pi)/(4)`C. `(pi)/(6)`D. `(pi)/(3)`
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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