作业帮y=sin(2x+派/3）会等于y=sin(2x-派/6）?或y=cos(2x-派/6）?
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/06 05:18:49
y=sin(2x+派/3）会等于y=sin(2x-派/6）?或y=cos(2x-派/6）?
y=sin(2x+派/3）会等于y=sin(2x-派/6）?或y=cos(2x-派/6）?
y=sin(2x+派/3）会等于y=sin(2x-派/6）?或y=cos(2x-派/6）?
y=sin(2x+π/3）
=sin[π/2+(2x-π/6)]
=cos(2x-π/6)