$\cos \left(2 \left(\tan ^{-1} \frac{1}{5}+\tan ^{-1} 5\right)\right) = $ . . . . . .

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

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Similar Questions

જો $\alpha = \cos^{-1}\left(\frac{3}{5}\right)$ અને $\beta = \tan^{-1}\left(\frac{1}{3}\right)$,જ્યાં $0 < \alpha, \beta < \frac{\pi}{2}$,તો $\alpha - \beta$ ની કિંમત શોધો.

જો $|x|>1$ માટે, $\tanh ^{-1}\left(\frac{1}{x}\right)+\operatorname{coth}^{-1}(x)=\log _e(f(x))$ હોય, તો $f(-5)=$

$\cot^{-1} \left[ \frac{\sqrt{1 - \sin x} + \sqrt{1 + \sin x}}{\sqrt{1 - \sin x} - \sqrt{1 + \sin x}} \right]$ ની કિંમત શોધો, જ્યાં $x \in (0, \frac{\pi}{2})$ છે.

વિધેયને તેના સરળ સ્વરૂપમાં લખો: $\tan ^{-1}\left(\frac{1}{\sqrt{x^{2}-1}}\right), |x|>1$

જો $y = \sin^{-1} \left( \frac{5x + 12\sqrt{1-x^2}}{13} \right)$ હોય,તો $\frac{dy}{dx} = $

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