若
,
,则与
同向的单位向量的坐标是__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d04eca2fca1786da562555fc20e08eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0756bf7cd2ce576cda3f9a65ae2497c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
更新时间:2020-02-28 23:04:08
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【推荐1】定义
,若
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【推荐2】已知点
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【推荐1】在平行四边形
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【推荐2】在直角坐标系中,
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