详细解题步骤
sin7π/3 cos(—π/6）+sin(—π/6) cos7π/3
答案:2 悬赏:80 手机版
解决时间 2021-07-26 20:21
- 提问者网友：浪荡绅士
- 2021-07-25 21:36
最佳答案
- 五星知识达人网友：雾月
- 2021-07-25 21:58
sin7π/3 cos(—π/6）+sin(—π/6) cos7π/3
=sin[7π/3+(-π/6)]
=sin(13π/6)
=sin(2π+π/6)
=sinπ/6
=1/2
全部回答
- 1楼网友：酒安江南
- 2021-07-25 22:06
sin7π/3 cos(—π/6）+sin(—π/6) cos7π/3
=sin(7π/3 -π/6)=sin(13π/6)
=sin(2π+π/6)
=sinπ/6
=1/2
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯