मान लीजिए $f(x) = \tan^{-1}\left(\frac{1+\cos x}{\sin x}\right)$ और $g(x) = \tan^{-1}\left(\frac{\sin x}{1-\cos x}\right)$ है। तो,$\int (f(x) + g(x)) \, dx$ का मान ज्ञात कीजिए।

  • A
    $\frac{\pi x}{2} - \frac{x^2}{4} + C$
  • B
    $\pi x - \frac{x^2}{2} + C$
  • C
    $\pi x + \frac{x^2}{4} + C$
  • D
    $\pi x + \frac{x^2}{2} + C$

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