$\mathop {\lim }\limits_{x \to 0} \frac{{1 - \cos x}}{{{{\sin }^2}x}} = $

  • A
    $\frac{1}{2}$
  • B
    $-\frac{1}{2}$
  • C
    $2$
  • D
    इनमें से कोई नहीं

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