A) 2
B) 1
C) ?2
D) None of these
Correct Answer: C
Solution :
\[\underset{x\to \pi /2}{\mathop{\lim }}\,2\,\left[ \frac{x-\frac{\pi }{2}}{\sin \,\left( \frac{\pi }{2}-x \right)} \right]=-\,2\] Aliter : Apply L-Hospital?s rule.
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