मान ज्ञात कीजिए: ${\cot ^{ - 1}}3 + {\csc ^{ - 1}}\sqrt 5 = $

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

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यदि $\sin ^{-1}\left(x-\frac{x^2}{2}+\frac{x^3}{4}-\ldots \infty\right) + \cos ^{-1}\left(x^2-\frac{x^4}{2}+\frac{x^6}{4}-\ldots \infty\right)=\frac{\pi}{2}$ और $0 < x < \sqrt{2}$ है,तो $x$ का मान ज्ञात कीजिए।

यदि $|x|>1$ के लिए, $\tanh ^{-1}\left(\frac{1}{x}\right)+\operatorname{coth}^{-1}(x)=\log _e(f(x))$ है, तो $f(-5)=$

यदि $0 < x < 1$ है,तो $y = \cos^{-1}\left(\frac{1-x^2}{1+x^2}\right)$ के लिए $\frac{dy}{dx}$ ज्ञात कीजिए।

$\sin \left[ \frac{\pi }{2} - \sin^{-1} \left( -\frac{\sqrt{3}}{2} \right) \right] = $

$\tan ^{-1}(\cot x)+\cot ^{-1}(\tan x) =$ . . . . . .

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