For \[A=133{}^\circ ,\ 2\cos \frac{A}{2}\]is equal to [DCE 2001]

1.	For \[A=133{}^\circ ,\ 2\cos \frac{A}{2}\]is equal to [DCE 2001]
A.	\[-\sqrt{1+\sin A}-\sqrt{1-\sin A}\]
B.	\[-\sqrt{1+\sin A}+\sqrt{1-\sin A}\]
C.	\[\sqrt{1+\sin A}-\sqrt{1-\sin A}\]
D.	\[\sqrt{1+\sin A}+\sqrt{1-\sin A}\]
Answer» D. \[\sqrt{1+\sin A}+\sqrt{1-\sin A}\]

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For \[A=133{}^\circ ,\ 2\cos \frac{A}{2}\]is equal to [DCE 2001]

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