જો $\cos \alpha = \frac{2 \cos \beta - 1}{2 - \cos \beta}$ હોય,તો $\tan \frac{\alpha}{2} \cot \frac{\beta}{2}$ ની કિંમત શોધો,જ્યાં $(0 < \alpha < \pi$ અને $0 < \beta < \pi)$.

  • A
    $\sqrt{3}$
  • B
    $\sqrt{2}$
  • C
    $3$
  • D
    $2$

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Similar Questions

ધારો કે $\alpha, \beta$ અને $\gamma$ એવા છે કે $0 < \alpha < \beta < \gamma < 2 \pi$. કોઈપણ $x \in \mathbb{R}$ માટે,જો $\cos (x+\alpha)+\cos (x+\beta)+\cos (x+\gamma)=0$ હોય,તો $\tan (\gamma-\alpha) = $

ધારો કે $S$ એ તમામ $\alpha \in \mathbb{R}$ નો ગણ છે જેથી સમીકરણ $\cos 2x + \alpha \sin x = 2\alpha - 7$ નો ઉકેલ મળે. તો $S$ બરાબર શું થાય?

$\sum_{k=1}^3 \cos^2 \left((2k-1) \frac{\pi}{12}\right)$ ની કિંમત શોધો.

$\cos^3 110^{\circ} + \cos^3 10^{\circ} + \cos^3 130^{\circ} = $

$\operatorname{Sech}^{-1}(\sin \alpha) =$

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