化简sin(80°+3α)cos(35°＋α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚

来源：学生作业学帮网编辑：学帮网时间：2024/06/05 05:31:38

sin(80°+3α)cos(35°＋α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚
=sin[(80°+3α)-(35°＋α)]
=sin(80°+3α-35°-α)]
=sin(45°+2α)