$\int \frac{\sin x \, dx}{a^2 + b^2 \cos^2 x} = $

  • A
    $\log (a^2 + b^2 \cos^2 x) + c$
  • B
    $\frac{1}{ab} \tan^{-1} \left( \frac{a \cos x}{b} \right) + c$
  • C
    $\frac{1}{ab} \cot^{-1} \left( \frac{b \cos x}{a} \right) + c$
  • D
    $\frac{1}{ab} \cot^{-1} \left( \frac{a \cos x}{b} \right) + c$

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