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) = $

  • A
    $-\sqrt{3}$
  • B
    $0$
  • C
    $1$
  • D
    $\sqrt{3}$

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