$\tan ^{-1}\left(\frac{1}{8}\right)+\tan ^{-1}\left(\frac{1}{2}\right)+\tan ^{-1}\left(\frac{1}{5}\right)$ का मान है

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

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Similar Questions

${\tan ^{ - 1}}\left[ {\cos \left( {2\,{{\tan }^{ - 1}}\frac{3}{4}} \right)\, + \,\sin \,\left( {2\,{{\cot }^{ - 1}}\frac{1}{2}} \right)} \right]$ का मान क्या है?

सिद्ध कीजिए कि $\tan ^{-1} x+\tan ^{-1} \frac{2 x}{1-x^{2}}=\tan ^{-1}\left(\frac{3 x-x^{3}}{1-3 x^{2}}\right)$,जहाँ $|x| < \frac{1}{\sqrt{3}}$.

$\cos ^{-1}\left\{\frac{1}{\sqrt{2}}\left(\cos \frac{9 \pi}{10}-\sin \frac{9 \pi}{10}\right)\right\}$ का मान ज्ञात कीजिए।

यदि $\sin^{-1} x + \sin^{-1} y = \frac{2\pi}{3}$ है,तो $\cos^{-1} x + \cos^{-1} y = $

केवल मुख्य मानों को ध्यान में रखते हुए,यदि $\tan (\cos ^{ - 1}x) = \sin [\cot ^{ - 1}(1/2)]$ है,तो $x$ का मान ज्ञात कीजिए।

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