$\sec ^2(\tan ^{-1} 2)+\operatorname{cosec}^2(\cot ^{-1} 3) = $ . . . . . . .

  • A
    $5$
  • B
    $6$
  • C
    $13$
  • D
    $15$

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Similar Questions

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

$\tan \left[ {\frac{1}{2}{{\sin }^{ - 1}}\left( {\frac{{2a}}{{1 + {a^2}}}} \right) + \frac{1}{2}{{\cos }^{ - 1}}\left( {\frac{{1 - {a^2}}}{{1 + {a^2}}}} \right)} \right] = $

જો $\sin ^{-1}\left(x-\frac{x^2}{2}+\frac{x^3}{4}-\ldots \infty\right) + \cos ^{-1}\left(x^2-\frac{x^4}{2}+\frac{x^6}{4}-\ldots \infty\right)=\frac{\pi}{2}$ અને $0 < x < \sqrt{2}$ હોય,તો $x$ 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.

$\tan \left[2 \tan ^{-1} \frac{1}{5}-\frac{\pi}{4}\right]$ ની કિંમત શોધો.

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