જો $\operatorname{Tan}^{-1} \frac{1}{3}+\operatorname{Tan}^{-1} \frac{1}{7}+\operatorname{Tan}^{-1} \frac{1}{13}+\ldots+\operatorname{Tan}^{-1} \frac{1}{n^2+n+1}=\operatorname{Tan}^{-1} \theta$ હોય,તો $\theta=$

  • 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

વિકલન શોધો: $\frac{d}{dx} \cos^{-1} \left( \frac{x - x^{-1}}{x + x^{-1}} \right)$

$\tan \left( \tan^{-1} \frac{1}{2} - \tan^{-1} \frac{1}{3} \right)$ નું મૂલ્ય શું છે?

જો $\cos^{-1} x = \alpha$ $(0 < x < 1)$ અને $\sin^{-1} (2 x \sqrt{1 - x^2}) + \sec^{-1} (\frac{1}{2 x^2 - 1}) = \frac{2 \pi}{3}$ હોય,તો $\alpha$ ની કિંમત શોધો.

જો $\frac{1}{2} \leq x \leq 1$ હોય,તો $\cos ^{-1} x+\cos ^{-1}\left(\frac{x}{2}+\frac{1}{2} \sqrt{3-3 x^2}\right)$ ની કિંમત શોધો.

જો $2 \sin ^{-1} x-3 \cos ^{-1} x=4, x \in[-1,1]$ હોય,તો $2 \sin ^{-1} x+3 \cos ^{-1} x$ ની કિંમત શોધો.

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