$\int \frac{dx}{7+5 \cos x}$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{\sqrt{3}} \tan ^{-1}\left(\frac{1}{\sqrt{3}} \tan \frac{x}{2}\right)+c$
  • B
    $\frac{1}{\sqrt{6}} \tan ^{-1}\left(\frac{1}{\sqrt{6}} \tan \frac{x}{2}\right)+c$
  • C
    $\frac{1}{7} \tan ^{-1}\left(\tan \frac{x}{2}\right)+c$
  • D
    $\frac{1}{4} \tan ^{-1}\left(\tan \frac{x}{2}\right)+c$

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