$\cot ^{-1}\left(2 \cdot 1^2\right)+\cot ^{-1}\left(2 \cdot 2^2\right)+\cot ^{-1}\left(2 \cdot 3^2\right)+\ldots \ldots \ldots \infty =$

  • A
    $\frac{\pi}{2}$
  • B
    $\frac{\pi}{3}$
  • C
    $\frac{\pi}{4}$
  • D
    $\frac{\pi}{6}$

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Similar Questions

$\sin(\cot^{-1}(\tan(\cos^{-1}x)))$ નું મૂલ્ય કેટલું થાય?

જો ${\sin ^{ - 1}}\left( {\frac{{2a}}{{1 + {a^2}}}} \right) + {\sin ^{ - 1}}\left( {\frac{{2b}}{{1 + {b^2}}}} \right) = 2{\tan ^{ - 1}}x,$ હોય,તો $x = $

જો $\sin ^{-1} x - \cos ^{-1} x = \frac{\pi}{6}$ હોય,તો $x$ ની કિંમત શોધો.

જો $f(x) = 2 \tan^{-1} x + \sin^{-1} \left( \frac{2x}{1 + x^2} \right)$,જ્યાં $x > 1$,તો $f(5)$ ની કિંમત શોધો:

જો $\tan^{-1} x + \tan^{-1} y = \frac{\pi}{4}$ હોય,તો:

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