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