如图,已知长方体
,
,则异面直线
所成的角是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2912fbb98d5db7d3f63efbdd547dc2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42a7ac63cfecdb8ed61a628bf7ffdbb.png)
![](https://img.xkw.com/dksih/QBM/2010/4/27/1569705794609152/null/STEM/a8ab0474d52a469db33241df1456b620.png?resizew=147)
2010·上海嘉定·二模 查看更多[4]
(已下线)上海市嘉定、黄浦区2010届高三第二次模拟考试数学文上海市七宝中学2015-2016学年高二下学期期中数学试题上海市陆行中学2021-2022学年高一下学期期末数学试题(已下线)专题三 期末高分必刷填空题(35道)-《考点·题型·密卷》
更新时间:2016-11-30 03:57:32
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【知识点】 求异面直线所成的角
相似题推荐
填空题-单空题
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较易
(0.85)
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解题方法
【推荐1】已知空间四边形
,连接
和
,且
,点
是线段
的中点,则异面直线
和
所成的角的余弦值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d3a546171c09da0f85309b5b7d6ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
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填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐2】如图,边长为1的菱形
中,
,沿
将
翻折,得到三棱锥
,则当三棱锥
体积最大时,异面直线
与
所成的角的余弦值等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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