已知平面向量
,
的夹角为120°,且
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d0708898a48bf7b33d731c158cf5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9533017270214eb1e1d19f9dd740f48.png)
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21-22高一下·甘肃兰州·期末 查看更多[6]
甘肃省兰州市第五十一中学2021-2022学年高一下学期期末考试数学试题向量的数量积(已下线)第05讲 平面向量的数量积(一)(已下线)9.2.3 向量的数量积-【题型分类归纳】2022-2023学年高一数学同步讲与练(苏教版2019必修第二册)(已下线)6.2.4 向量的数量积(精讲)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)复习专题02平面向量的数量积运算(1)-期末专项复习
更新时间:2022-07-20 20:17:52
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