sin(-20π\3)等于
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 01:01:54
![sin(-20π\3)等于](/uploads/image/z/3846516-60-6.jpg?t=sin%28-20%CF%80%5C3%29%E7%AD%89%E4%BA%8E)
sin(-20π\3)等于
sin(-20π\3)等于
sin(-20π\3)等于
sin(-20π\3)=sin[(-18-2)π\3]
=sin(-2π\3)
=-sin(2π\3)
=-√3/2
这个sin(-20派/3)=sin(-20派/3 8派)=sin(4派/3)=sin(派 派/3)=负的二分之根三
SIN(6派-20/3派)=SIN(-2/3派)=-SIN(派-2/3派)=-SIN(3/派)=-2/根号3