计算:(1)12?|?3|+(12)?2?4cos30° (2)3tan45°-sin60°+cos30°+(sin60°?1)2
计算:(1)12?|?3|+(12)?2?4cos30°(2)3tan45°-sin60°+cos30°+(sin60°?1)2....
计算:(1)12?|?3|+(12)?2?4cos30° (2)3tan45°-sin60°+cos30°+(sin60°?1)2.
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