If \( \cos A=\tan B, \cos B=\tan C, \cos C=\tan A \), then \( \sin A \) is equal to (A) \( \sin ...
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0If \( \cos A=\tan B, \cos B=\tan C, \cos C=\tan A \), then \( \sin A \) is equal to
(A) \( \sin 18^{\circ} \)
(B) \( 2 \cos 18^{\circ} \)
(C) \( 2 \sin 18^{\circ} \)
(D) \( 2 \cos 36^{\circ} \)
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