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解题方法
1 . 若异面直线
的方向向量分别是
,
,则异面直线
与
的夹角的余弦值等于 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b270384ef6e4041b44aa962a788657fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344108836ea6a0a9ba1d22b0f5c66e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96959387ab866c4ca7c539e57814a3ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d27c081879b6c6bc0abb0ceedb9d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5c154445ca71ee9d4fb29a98b8965d.png)
您最近一年使用:0次
2024-03-20更新
|
129次组卷
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2卷引用:甘肃省天水市第一中学2023-2024学年高二下学期第二学段检测考试(6月)数学试题
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2 . 已知空间三点
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0905c5d7bc558df663034c710ed3040.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4098582bf9572f219d7a7d1f30562d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc61309dfeac3ac847e44f1358ea201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dce56f9e70dba0c20f508ad4a0e8b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0905c5d7bc558df663034c710ed3040.png)
您最近一年使用:0次
2023-07-06更新
|
376次组卷
|
4卷引用:甘肃省武威第十八中学2023-2024学年高二下学期期中考试数学试卷