1.

`tan^(-1)sqrt3-cot^(-1)(-sqrt3)` का मान है :A. `pi`B. `-(pi)/(2)`C. 0D. `2sqrt3`

Answer» Correct Answer - B
`tan^(-1)sqrt3-cot^(-1)(-sqrt3)`
`=tan^(-1)sqrt3-(pi-cot^(-1)sqrt3)`
`=tan^(-1)sqrt3-pi+cot^(-1)sqrt3`
`=(tan^(-1)sqrt3+cot^(-1)sqrt3)-pi`
`=(pi)/(2)-pi=-(pi)/(2)`


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