cos(3π/2 - π/3),求值
来源:学生作业学帮网 编辑:学帮网 时间:2024/05/15 12:33:20
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
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来源:学生作业学帮网 编辑:学帮网 时间:2024/05/15 12:33:20
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