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Let f(x) = (1 - cos px)/(x sin x), where...

Let `f(x) = (1 - cos px)/(x sin x)`, where `x ne 0 and f(0) = (1)/(2)`. If f is continuous at 0, then p is equal to :

A

1 or -1

B

-2

C

2

D

None of these

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The correct Answer is:
A
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