A) 1
B) 2
C) \[\frac{1}{2}\]
D) \[\frac{1}{4}\]
Correct Answer: C
Solution :
\[\underset{\theta \to 0}{\mathop{\lim }}\,\,\frac{2\,{{\sin }^{2}}(\theta /2)}{{{\theta }^{2}}}=\frac{1}{2}.\] Aliter : Apply L-Hospital?s rule.
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