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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જો $\sin ^{-1} x+\sin ^{-1} y+\sin ^{-1} z=\frac{3 \pi}{2}$ હોય,તો $x^{9}+y^{9}+z^{9}-\frac{1}{x^{9} y^{9} z^{9}}$ ની કિંમત કેટલી થાય?

જો $0 \leq x \leq \frac{1}{2}$ હોય,તો $\tan \left[\sin ^{-1}\left\{\frac{x}{\sqrt{2}}+\frac{\sqrt{1-x^{2}}}{\sqrt{2}}\right\}-\sin ^{-1} x\right]$ ની કિંમત શોધો.

જો $\alpha = \cos^{-1}\left(\frac{3}{5}\right)$ અને $\beta = \tan^{-1}\left(\frac{1}{3}\right)$,જ્યાં $0 < \alpha, \beta < \frac{\pi}{2}$,તો $\alpha - \beta$ ની કિંમત શોધો.

$\sin \left( 4 \tan^{-1} \frac{1}{3} \right) = $

$(\tan ^{-1} x)^2+(\cot ^{-1} x)^2=\frac{5 \pi^2}{8} \Rightarrow x=$

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