名校
解题方法
1 . 已知
,
与
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8127bbbabb567dc5ffd6f9d6b70dc01b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5f5bbd930bfb957eff31038b2380f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8127bbbabb567dc5ffd6f9d6b70dc01b.png)
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2021-09-12更新
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343次组卷
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5卷引用:吉林省洮南市第一中学2022届高三下学期第一次线上考试数学(理)试题