\[\int_{{}}^{{}}{\cos x\sqrt{4-{{\sin }^{2}}x}}\ dx=\]

1.	\[\int_{{}}^{{}}{\cos x\sqrt{4-{{\sin }^{2}}x}}\ dx=\]
A.	\[\frac{1}{2}\sin x\sqrt{4-{{\sin }^{2}}x}-2{{\sin }^{-1}}\left( \frac{1}{2}\sin x \right)+c\]
B.	\[\frac{1}{2}\sin x\sqrt{4-{{\sin }^{2}}x}+2{{\sin }^{-1}}\left( \frac{1}{2}\sin x \right)+c\]
C.	\[\frac{1}{2}\sin x\sqrt{4-{{\sin }^{2}}x}+{{\sin }^{-1}}\left( \frac{1}{2}\sin x \right)+c\]
D.	None of these
Answer» C. \[\frac{1}{2}\sin x\sqrt{4-{{\sin }^{2}}x}+{{\sin }^{-1}}\left( \frac{1}{2}\sin x \right)+c\]

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\[\int_{{}}^{{}}{\cos x\sqrt{4-{{\sin }^{2}}x}}\ dx=\]

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