જો $\sin^{-1} x + \cos^{-1} y = \frac{2\pi}{5}$ હોય,તો $\cos^{-1} x + \sin^{-1} y$ ની કિંમત શું થાય?

  • A
    $\frac{2\pi}{5}$
  • B
    $\frac{3\pi}{5}$
  • C
    $\frac{4\pi}{5}$
  • D
    $\frac{3\pi}{10}$

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$2 \operatorname{Cos}^{-1} x + \operatorname{Sin}^{-1} x = \frac{11 \pi}{6}$ સમીકરણના ઉકેલોની સંખ્યા કેટલી છે?

જો $-1 < x < 1$ અને $x \neq 0$ માટે $\tan ^{-1}\left(\frac{2 x}{1-x^2}\right)+\cot ^{-1}\left(\frac{1-x^2}{2 x}\right)=\frac{\pi}{3}$ ના તમામ ઉકેલોનો સરવાળો $\alpha-\frac{4}{\sqrt{3}}$ હોય,તો $\alpha$ ની કિંમત $..........$ થાય.

જો $\operatorname{Tan}^{-1} \frac{1}{3}+\operatorname{Tan}^{-1} \frac{1}{7}+\operatorname{Tan}^{-1} \frac{1}{13}+\ldots+\operatorname{Tan}^{-1} \frac{1}{n^2+n+1}=\operatorname{Tan}^{-1} \theta$ હોય,તો $\theta=$

જો $|x| < 1$ હોય,તો $y = \sin^{-1}\left(\frac{2x}{1+x^2}\right)$ માટે $\frac{dy}{dx}$ શોધો.

$x$ ની કઈ કિંમત માટે $\sin(\cot^{-1} (1 + x)) = \cos(\tan^{-1} x)$ થાય?

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