જો $x_1, x_2, x_3$ એ સમીકરણ $x^3-x^2 \tan \theta+x \tan ^2 \theta+\tan \theta=0$ ના વાસ્તવિક બીજ હોય અને $0 < \theta < \frac{\pi}{4}$ હોય,તો $\theta=\frac{\pi}{12}$ પર $\tan ^{-1} x_1+\tan ^{-1} x_2+\tan ^{-1} x_3$ નું મૂલ્ય શું થાય?

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

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Similar Questions

ધારો કે $f(\theta) = \sin ( \tan ^{-1} ( \frac{\sin \theta}{\sqrt{\cos 2 \theta}} ) )$,જ્યાં $-\frac{\pi}{4} < \theta < \frac{\pi}{4}$,તો $\frac{d}{d(\tan \theta)}(f(\theta))$ નું મૂલ્ય 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.

ધારો કે $S_{k} = \sum_{r=1}^{k} \tan^{-1}\left(\frac{6^{r}}{2^{2r+1} + 3^{2r+1}}\right)$. તો $\lim_{k \rightarrow \infty} S_{k}$ ની કિંમત શોધો.

જો $y = \tan^{-1} \frac{x}{1+2x^2} + \tan^{-1} \frac{x}{1+6x^2} + \tan^{-1} \frac{x}{1+12x^2}$ હોય,તો $\left(\frac{dy}{dx}\right)_{x=\frac{1}{2}} = $

$\cot ^{-1}\left(2 \cdot 1^2\right)+\cot ^{-1}\left(2 \cdot 2^2\right)+\cot ^{-1}\left(2 \cdot 3^2\right)+\ldots \ldots \ldots \infty =$

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