$\tan ^{-1} \frac{1}{3}+\tan ^{-1} \frac{1}{5}+\tan ^{-1} \frac{1}{7}+\tan ^{-1} \frac{1}{8}$ का मान $ . . . . . . $ है।

  • A
    $\frac{11 \pi}{5}$
  • B
    $\frac{\pi}{4}$
  • C
    $\pi$
  • D
    $\frac{3 \pi}{4}$

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Similar Questions

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

$\cot \left( {\sum\limits_{n = 1}^{19} {{{\cot }^{ - 1}}\left( {1 + \sum\limits_{p = 1}^n {2p} } \right)} } \right)$ का मान ज्ञात कीजिए।

सिद्ध कीजिए कि $\sin^{-1}(2x\sqrt{1-x^2}) = 2\sin^{-1}x$,जहाँ $-\frac{1}{\sqrt{2}} \leq x \leq \frac{1}{\sqrt{2}}$.

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

$\sin ^{-1} \frac{4}{5} + 2 \tan ^{-1} \frac{1}{3}$ का मान ज्ञात कीजिए।

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