What is \[\underset{x\to 0}{\mathop{\lim }}\,\frac{x}{\sqrt{1-\cos x}}\] equal to?

What is \[\underset{x\to 0}{\mathop{\lim }}\,\frac{x}{\sqrt{1-\cos x}}

1.	What is \[\underset{x\to 0}{\mathop{\lim }}\,\frac{x}{\sqrt{1-\cos x}}\] equal to?
A.	\[\sqrt{2}\]
B.	\[-\sqrt{2}\]
C.	\[\frac{1}{\sqrt{2}}\]
D.	Limit does not exist
Answer» E.

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What is \[\underset{x\to 0}{\mathop{\lim }}\,\frac{x}{\sqrt{1-\cos x}}\] equal to?

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