sin(-52π/3)=
答案:3 悬赏:30 手机版
解决时间 2021-02-06 11:20
- 提问者网友：無理詩人
- 2021-02-05 18:55
sin(-52π/3)=
最佳答案
- 五星知识达人网友：野慌
- 2021-02-05 19:45
sin(-52π/3)
=sin(18π-52π/3)
=sin(2π/3)
=sin(π-π/3)
=sin(π/3)
=√3/2
=sin(18π-52π/3)
=sin(2π/3)
=sin(π-π/3)
=sin(π/3)
=√3/2
全部回答
- 1楼网友：神鬼未生
- 2021-02-05 21:41
sqrt(3)/2
- 2楼网友：由着我着迷
- 2021-02-05 20:45
利用诱导公式
sin(-52兀/3)=sin(-56兀+18兀)
=sin(2兀/3)=sin(兀-兀/3)=sin(兀/3)=√3/2
sin(-52兀/3)=sin(-56兀+18兀)
=sin(2兀/3)=sin(兀-兀/3)=sin(兀/3)=√3/2
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