$\tan \left(\cos ^{-1}\left(\frac{4}{5}\right)+\tan ^{-1}\left(\frac{2}{3}\right)\right)$ का मान है

  • A
    $\frac{6}{17}$
  • B
    $\frac{7}{16}$
  • C
    $\frac{16}{7}$
  • D
    $\frac{17}{6}$

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$\sin ^{-1} \frac{12}{13}+\cos ^{-1} \frac{4}{5}+\tan ^{-1} \frac{63}{16}$ का मान क्या है?

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$\tan \left[ \cos^{-1} \frac{4}{5} + \tan^{-1} \frac{2}{3} \right] =$

यदि $\sin ^{-1}\left(\frac{2 a}{1+a^2}\right)+\cos ^{-1}\left(\frac{1-a^2}{1+a^2}\right)=\tan ^{-1}\left(\frac{2 x}{1-x^2}\right)$ जहाँ $a, x \in(0,1)$,तो $x$ का मान ज्ञात कीजिए।

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