\[\int_{-\pi /2}^{\pi /2}{\sqrt{\frac{1}{2}(1-\cos 2x)}}\,dx=\]

1.	\[\int_{-\pi /2}^{\pi /2}{\sqrt{\frac{1}{2}(1-\cos 2x)}}\,dx=\]
A.	0
B.	2
C.	\[\frac{1}{2}\]
D.	None of these
Answer» C. \[\frac{1}{2}\]

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\[\int_{-\pi /2}^{\pi /2}{\sqrt{\frac{1}{2}(1-\cos 2x)}}\,dx=\]

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