化简sin8°+cos8°\sin8°-cos8°
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 17:30:21
化简sin8°+cos8°\sin8°-cos8°化简sin8°+cos8°\sin8°-cos8°化简sin8°+cos8°\sin8°-cos8°(sin8°+cos8°)/(sin8°-cos8
化简sin8°+cos8°\sin8°-cos8°
化简sin8°+cos8°\sin8°-cos8°
化简sin8°+cos8°\sin8°-cos8°
(sin8°+cos8°)/(sin8°-cos8°)
=(sin8°+cos8°)²/[(sin8°-cos8°)(sin8°+cos8°)]
=[1+sin16°]/[-(cos²8°-sin²8°)]
=-(1+sin16°)/cos16°