જો $3 \tan^{-1} x + \cot^{-1} x = \pi$ હોય,તો $x$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $-1$
  • D
    $\frac{1}{2}$

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$\tan^{-1}(-2) - \tan^{-1}(3)$ ની કિંમત શોધો.

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જો $4 \sin ^{-1} x + \cos ^{-1} x = \pi$ હોય,તો $x = $

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