已知空间向量
,则下列说法正确的有___________ 个
①
;②
;③若
,则
;④与
方向相同的单位向量为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518e230d9c35fd9d05ed3ae4d00396b7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf1064d26948537da8d2ec4a747d7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140389f12a8473fe37bef04a49e3d302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934cb494e22dd21ebaffb044da5866f4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
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22-23高二上·上海浦东新·期末 查看更多[3]
上海市高桥中学2022-2023学年高二上学期期末数学试题(已下线)核心考点05 空间向量及其应用(3)(已下线)专题07 空间向量与立体几何(九大题型+优选提升题)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)
更新时间:2023-02-27 11:46:03
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