કિંમત શોધો: ${\tan ^{ - 1}}1 + {\tan ^{ - 1}}2 + {\tan ^{ - 1}}3$

  • A
    $\frac{\pi }{2}$
  • B
    $\frac{\pi }{4}$
  • C
    $0$
  • D
    આમાંથી કોઈ નહીં

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Similar Questions

જો $y = \tan^{-1} \left( \frac{x^{1/3} + a^{1/3}}{1 - x^{1/3}a^{1/3}} \right)$ હોય,તો $\frac{dy}{dx} = $

જો $\sin ^{-1} \frac{1}{3}+\sin ^{-1} \frac{3}{5}+\sin ^{-1} x=\frac{\pi}{2}$ હોય,તો $x=$

$\sin ^{-1}\left(-\frac{1}{\sqrt{2}}\right)+\cos ^{-1}\left(-\frac{1}{2}\right)-\cot ^{-1}\left(-\frac{1}{\sqrt{3}}\right)+\tan ^{-1}(\sqrt{3})$ નું મૂલ્ય શોધો.

જો $\theta = \cot^{-1}(7) + \cot^{-1}(8) + \cot^{-1}(18)$ હોય,તો $\cot \theta$ ની કિંમત શોધો.

જો $\tan ^{-1} x+\tan ^{-1} y=\frac{4 \pi}{5}$ હોય,તો $\cot ^{-1} x+\cot ^{-1} y$ ની કિંમત શોધો.

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