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(Solved): help solving Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. ...
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Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) \( 2 \sin \left(12^{\circ}\right) \cos \left(12^{\circ}\right) \) (b) \( 2 \sin (3 \theta) \cos (3 \theta) \)