$\int \frac{\sin x \, dx}{3 + 4\cos^2 x} = $

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

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