已知向量
两两所成的角相等但不共线,并且
,
,
,则向量
与向量
的夹角为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728ed31a913bc716474e2067634b2878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f744c4442e4294dc9e8a7a35cf0243ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18ed440da4d484922cac44983de83fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b5bbe37cc6de8ceb50091f49ce8ef3.png)
更新时间:2019-12-17 11:11:14
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解题方法
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