\[\int_{{}}^{{}}{\sqrt{1+\cos x}\ dx}\] equals [RPET 1996]

1.	\[\int_{{}}^{{}}{\sqrt{1+\cos x}\ dx}\] equals [RPET 1996]
A.	\[2\sqrt{2}\sin \frac{x}{2}+c\]
B.	\[-2\sqrt{2}\sin \frac{x}{2}+c\]
C.	\[-2\sqrt{2}\cos \frac{x}{2}+c\]
D.	\[2\sqrt{2}\cos \frac{x}{2}+c\]
Answer» B. \[-2\sqrt{2}\sin \frac{x}{2}+c\]

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\[\int_{{}}^{{}}{\sqrt{1+\cos x}\ dx}\] equals [RPET 1996]

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