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sin30+cos60
sin 30 cos60 + sin 60 cos 30 Method 1 sin 30 cos60 + sin 60 cos 30 = sin(30 + 60) = sin (90) = 1 Method 2 sin 30 cos60 + sin 60 cos 30 = 1/2 * 1/2 + {(3)^1/2} 2 *{{(3)^ 1/2}/2 = 1/4 + 3/4 = 1, please rate good
Expert answered|ANGEEELICA|Points 1371|
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Asked 2/17/2011 4:29:11 AM
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