$\int \frac{dx}{2 + \cos x} = $

  • A
    $2 \tan^{-1} \left( \frac{1}{\sqrt{3}} \tan \frac{x}{2} \right) + c$
  • B
    $\frac{2}{\sqrt{3}} \tan^{-1} \left( \frac{1}{\sqrt{3}} \tan \frac{x}{2} \right) + c$
  • C
    $\frac{1}{\sqrt{3}} \tan^{-1} \left( \frac{1}{\sqrt{3}} \tan \frac{x}{2} \right) + c$
  • D
    इनमें से कोई नहीं

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