\( \tan ^{-1} \sqrt{3}-\cot ^{-1}(-\sqrt{3}) \) का मान है : (A) \( \pi \) (B) \( -\frac{\pi}{2} ...

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\( \tan ^{-1} \sqrt{3}-\cot ^{-1}(-\sqrt{3}) \) का मान है :
(A) \( \pi \)
(B) \( -\frac{\pi}{2} \)
(C) \( 2 \sqrt{3} \)
(D) undefined
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