化简sin(80°+3α)cos(35°+α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 15:55:10
![化简sin(80°+3α)cos(35°+α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚](/uploads/image/z/8900902-46-2.jpg?t=%E5%8C%96%E7%AE%80sin%2880%C2%B0%2B3%CE%B1%29cos%2835%C2%B0%EF%BC%8B%CE%B1%29-cos%2880%C2%B0%EF%B9%A23%CE%B1%EF%B9%9Asin%EF%B9%9935%C2%B0%EF%B9%A23%CE%B1%EF%B9%9A)
化简sin(80°+3α)cos(35°+α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚
化简sin(80°+3α)cos(35°+α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚
化简sin(80°+3α)cos(35°+α)-cos(80°﹢3α﹚sin﹙35°﹢3α﹚
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)