यदि $\operatorname{Tan}^{-1} \frac{1}{3}+\operatorname{Tan}^{-1} \frac{1}{7}+\operatorname{Tan}^{-1} \frac{1}{13}+\ldots+\operatorname{Tan}^{-1} \frac{1}{n^2+n+1}=\operatorname{Tan}^{-1} \theta$ है,तो $\theta=$

  • A
    $\frac{n}{n+2}$
  • B
    $\frac{n}{n+1}$
  • C
    $\frac{n+1}{n+2}$
  • D
    $\frac{n-1}{n+2}$

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Similar Questions

$4 \tan ^{-1} \frac{1}{5}-\tan ^{-1} \frac{1}{70}+\tan ^{-1} \frac{1}{99}=$

$\cos \left[\sin ^{-1}\left(\frac{3}{5}\right)+\cos ^{-1}\left(\frac{12}{13}\right)\right]=$

$\tan^{-1} \frac{1}{2} + \tan^{-1} \frac{1}{3} = ?$

मान लीजिए $S = \{x \in R : 0 < x < 1 \text{ और } 2 \tan^{-1}\left(\frac{1-x}{1+x}\right) = \cos^{-1}\left(\frac{1-x^2}{1+x^2}\right)\}$ है। यदि $n(S)$,$S$ में अवयवों की संख्या को दर्शाता है,तो:

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

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