सीमा का मान ज्ञात कीजिए: $\lim _{x \rightarrow 0} \frac{\sqrt{1+x \sin x}-\sqrt{\cos x}}{\tan ^2 \frac{x}{2}}$

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $-1$

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