$\sin \left( {2{{\tan }^{ - 1}}\left( {\frac{1}{3}} \right)} \right) + \cos ({\tan ^{ - 1}}(2\sqrt 2 ))$ का मान ज्ञात कीजिए।

  • A
    $\frac{16}{15}$
  • B
    $\frac{14}{15}$
  • C
    $\frac{12}{15}$
  • D
    $\frac{11}{15}$

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Similar Questions

यदि $\cos^{-1} x = \alpha$ $(0 < x < 1)$ और $\sin^{-1} (2 x \sqrt{1 - x^2}) + \sec^{-1} (\frac{1}{2 x^2 - 1}) = \frac{2 \pi}{3}$ है,तो $\alpha$ का मान ज्ञात कीजिए।

यदि $y=\tan ^{-1}\left(\frac{3 x-x^3}{1-3 x^2}\right)+\tan ^{-1}\left(\frac{4 x-4 x^3}{1-6 x^2+x^4}\right)$ है, तो $\frac{d y}{d x}$ का मान क्या होगा?

$\cos \left(2 \cos ^{-1} \frac{1}{5}+\sin ^{-1} \frac{1}{5}\right)$ का मान ज्ञात कीजिए।

$\tan^{-1} \left( \frac{\sqrt{1 + x^2} - 1}{x} \right) = $

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

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