已知平面向量
,
满足
,
,且
,则
,
的夹角的余弦( )
![](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/70e310702748855c3edccd151aae0143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fa8ea29001bb1f0c1e5157aff2fca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013b1fb81fe1957456d57aa29e4c2fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高三上·陕西渭南·阶段练习 查看更多[4]
陕西省渭南市尚德中学2021-2022学年高三上学期第一次质量检测理科数学试题(已下线)专题14 平面向量-备战2022年高考数学(理)母题题源解密(全国甲卷)(已下线)专题13 平面向量-备战2022年高考数学(文)母题题源解密(全国甲卷)湖北省随州市第一中学2023-2024学年高二上学期8月月考数学试题
更新时间:2021-09-03 16:48:54
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解题方法
【推荐1】已知
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【推荐2】在
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【推荐1】已知向量
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【推荐1】若
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