यदि $y = \cot^{-1} \left[ \frac{\sqrt{1 + \sin x} + \sqrt{1 - \sin x}}{\sqrt{1 + \sin x} - \sqrt{1 - \sin x}} \right]$ है,तो $\frac{dy}{dx} = $

  • A
    $1/2$
  • B
    $2/3$
  • C
    $3$
  • D
    $1$

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यदि $\sin ^{-1}(4 x)+\sin ^{-1}(4 \sqrt{3} x)=-\frac{\pi}{2}$ है,तो $x$ का निरपेक्ष मान क्या है?

$\sum_{i=0}^2 \cot ^{-1}\{-(i+1)\}=$ . . . . . . .

${\sin ^{ - 1}}\left[ {x\sqrt {1 - x} - \sqrt x \sqrt {1 - {x^2}} } \right] = $

यदि $\frac{1}{2} \sin^{-1}\left(\frac{3 \sin 2\theta}{5+4 \cos 2\theta}\right) = \tan^{-1} x$ है,तो $x =$

$4 \tan^{-1} \frac{1}{5} - \tan^{-1} \frac{1}{70} + \tan^{-1} \frac{1}{99} = $

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