MCQ
$\tan ^{-1}(1)+\cot ^{-1}\left(\frac{1}{2}\right)+\cot ^{-1}\left(\frac{1}{3}\right)$ का मान है :
  • $0$
  • B
    1
  • C
    $\pi$
  • D
    $-\pi $.

Answer

Correct option: A.
$0$
(A)

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