$\cot \left[\sum_{n=3}^{32} \cot ^{-1}\left(1+\sum_{k=1}^n 2 k\right)\right]=$

  • A
    $\frac{10}{3}$
  • B
    $\frac{8}{3}$
  • C
    $\frac{14}{3}$
  • D
    $\frac{16}{3}$

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Similar Questions

मान लीजिए $\tan ^{-1} y = \tan ^{-1} x + \tan ^{-1} \left( \frac{2x}{1 - x^2} \right)$,जहाँ $|x| < \frac{1}{\sqrt{3}}$,तो $y$ का एक मान क्या है?

यदि $0 \leqslant \cos ^{-1} x \leqslant \pi$ और $\frac{-\pi}{2} \leqslant \sin ^{-1} x \leqslant \frac{\pi}{2}$ है,तो $x=\frac{1}{5}$ पर $\cos \left(2 \cos ^{-1} x+\sin ^{-1} x\right)$ का मान है

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

यदि $\sin ^{-1}\left(\frac{x}{5}\right)+\operatorname{cosec}^{-1}\left(\frac{5}{4}\right)=\frac{\pi}{2}$,तो $5+x=$

यदि $(\sin ^{-1} x)^{2}-(\cos ^{-1} x)^{2}=a ; 0 < x < 1, a \neq 0$ है,तो $2 x^{2}-1$ का मान क्या है?

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