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解题方法
1 . 如图,在长方体
中,
,
,则直线
和
夹角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/17/2853314930581504/2856806217883648/STEM/b6989db0-7deb-4278-8141-246ff7b33c29.png?resizew=293)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c851cf4994e90632536297d151badc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f32a7f0fb3cc6eaa91ad3f44b9d5610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://img.xkw.com/dksih/QBM/2021/11/17/2853314930581504/2856806217883648/STEM/b6989db0-7deb-4278-8141-246ff7b33c29.png?resizew=293)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-22更新
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996次组卷
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8卷引用:内蒙古自治区赤峰市赤峰实验中学2023-2024学年高二下学期开学考试数学试题