यदि $0 < x < \frac{1}{2}$ और $\alpha = \sin^{-1} x + \cos^{-1} \left( \frac{x}{2} + \frac{\sqrt{3 - 3 x^2}}{2} \right)$ है,तो $\tan \alpha + \cot \alpha =$

  • A
    $\frac{4}{\sqrt{3}}$
  • B
    $4 \sqrt{3}$
  • C
    $\frac{4 x}{1 - x^2}$
  • D
    $x \sqrt{1 - x^2}$

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यदि $\sin ^{-1}\left(\frac{3}{x}\right)+\sin ^{-1}\left(\frac{4}{x}\right)=\frac{\pi}{2}$ है,तो $x$ का मान ज्ञात कीजिए।

यदि $\cos^{-1} x - \cos^{-1} \frac{y}{2} = \alpha$ है,तो $4x^2 - 4xy \cos \alpha + y^2$ का मान ज्ञात कीजिए।

${\tan ^{ - 1}}\left[ {\frac{{\sqrt {1 + {x^2}} + \sqrt {1 - {x^2}} }}{{\sqrt {1 + {x^2}} - \sqrt {1 - {x^2}} }}} \right]$,जहाँ $|x| < 1$ और $x \ne 0$ है,का मान क्या होगा?

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यदि ${\sin ^{ - 1}}x + {\cot ^{ - 1}}\left( {\frac{1}{2}} \right) = \frac{\pi }{2}$ है,तो $x$ का मान ज्ञात कीजिए।

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