For \( A=133^{\circ}, 2 \cos \frac{A}{2} \) is equal to \( \mathrm{...

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For \( A=133^{\circ}, 2 \cos \frac{A}{2} \) is equal to
\( \mathrm{P} \)
W
(1) \( -\sqrt{1+\sin A}-\sqrt{1-\sin A} \)
(2) \( -\sqrt{1+\sin A}+\sqrt{1-\sin A} \)
(3) \( \sqrt{1+\sin A}-\sqrt{1-\sin A} \)
(4) \( \sqrt{1+\sin A}+\sqrt{1-\sin A} \)
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