$2 \cos ^{-1} x = \sin ^{-1} \left( 2 x \sqrt{1 - x^2} \right)$,$x$ के किन मानों के लिए मान्य है?

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

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मान ज्ञात कीजिए: ${\tan ^{ - 1}}1 + {\tan ^{ - 1}}2 + {\tan ^{ - 1}}3$

यदि $y = \sin^{-1}x + \sin^{-1}\sqrt{1-x^2}$,जहाँ $-1 \le x \le 1$ है,तो $\frac{dy}{dx}$ ज्ञात कीजिए।

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$\frac{d}{dx} \left( \tan^{-1} \left( \frac{\cos x}{1 + \sin x} \right) \right) =$

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

यदि $\tan ^{-1}\left(\frac{1}{4}\right)+\tan ^{-1}\left(\frac{2}{9}\right)=\frac{1}{2} \cos ^{-1} x$ है,तो $x$ का मान ज्ञात कीजिए।

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