向量
是单位向量,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e912b86e064e678ab34210f3fa02ef.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
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20-21高一下·山西朔州·阶段练习 查看更多[3]
山西省怀仁市大地学校2020-2021学年高一下学期第三次月考数学试题(已下线)专题9.1 向量概念(重点练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)云南省大理市大理州实验中学2021-2022学年高二上学期12月月考数学试题
更新时间:2021-09-15 16:54:01
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