निश्चित समाकलन का मान ज्ञात कीजिए: $\int_0^\pi \frac{x \cos^2 x}{1+\sin x} dx$

  • A
    $\frac{\pi(\pi-2)}{2}$
  • B
    $1$
  • C
    $\frac{\pi(\pi+2)}{2}$
  • D
    $\frac{\pi}{4}$

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