(cos12分之派减sin12分之派)(COS12分之%+sin12分之派)的植为多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 04:50:39
![(cos12分之派减sin12分之派)(COS12分之%+sin12分之派)的植为多少](/uploads/image/z/563090-50-0.jpg?t=%28cos12%E5%88%86%E4%B9%8B%E6%B4%BE%E5%87%8Fsin12%E5%88%86%E4%B9%8B%E6%B4%BE%29%28COS12%E5%88%86%E4%B9%8B%25%2Bsin12%E5%88%86%E4%B9%8B%E6%B4%BE%29%E7%9A%84%E6%A4%8D%E4%B8%BA%E5%A4%9A%E5%B0%91)
(cos12分之派减sin12分之派)(COS12分之%+sin12分之派)的植为多少
(cos12分之派减sin12分之派)(COS12分之%+sin12分之派)的植为多少
(cos12分之派减sin12分之派)(COS12分之%+sin12分之派)的植为多少
原式=cos²π/12-sin²π/12
=cos(2×π/12)
=cosπ/6
=√3/2