cos(3π/2 - π/3),求值

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/29 12:12:23
cos(3π/2 - π/3),求值
x)K/0>ߠo5umlzڰ&H~ //ƐK؂7hcJBd03@y1XHF 10*$$ T9

cos(3π/2 - π/3),求值
cos(3π/2 - π/3),求值

cos(3π/2 - π/3),求值
解cos(3π/2 - π/3)
=cos(π+π/2 - π/3)
=-cos(π/2 - π/3)
=-sin（π/3)
=-√3/2.

-√3/2