问题描述: 化简sin8°+cos8°\sin8°-cos8° 1个回答 分类:数学 2014-09-29 问题解答: 我来补答 (sin8°+cos8°)/(sin8°-cos8°)=(sin8°+cos8°)²/[(sin8°-cos8°)(sin8°+cos8°)]=[1+sin16°]/[-(cos²8°-sin²8°)]=-(1+sin16°)/cos16° 展开全文阅读