已知向量
,
,
,则向量
、
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21de6f6bc476cf693ade10cbf32ea7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0886563338a14456132643b507e4f605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d28eab3b97cbeff2ff5527a0603ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-06-15 19:42:32
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