若(cos2x)/[sin(x-π/4)]=-√2/2,则cosx+sinx的值为______
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/15 23:59:47
若(cos2x)/[sin(x-π/4)]=-√2/2,则cosx+sinx的值为______若(cos2x)/[sin(x-π/4)]=-√2/2,则cosx+sinx的值为______若(cos2
若(cos2x)/[sin(x-π/4)]=-√2/2,则cosx+sinx的值为______
若(cos2x)/[sin(x-π/4)]=-√2/2,则cosx+sinx的值为______
若(cos2x)/[sin(x-π/4)]=-√2/2,则cosx+sinx的值为______
(cosx^2-sinx^2)/(sinx-cosx)=1,cosx+sinx=-1