名校
解题方法
1 . 在正三棱柱
中,
,点M是线段
的中点,点N是线段AB的中点,记直线
与CN所成角为
,二面角
的平面角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9d5815dc775d5a5810fff0b016a8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185729402f3b20ac3e0b003be9b385eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 在长方体
中,
,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ba037d949df048cf062cb7b4c82bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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4卷引用:安徽省蚌埠市2020-2021学年高一下学期期末数学试题
安徽省蚌埠市2020-2021学年高一下学期期末数学试题安徽省芜湖市无为市华星学校2021-2022学年高二上学期入学考试数学试题(已下线)2021年高考全国乙卷数学(理)高考真题变式题1-5题(已下线)2021年高考全国乙卷数学(理)高考真题变式题1-5题
3 . 在棱长为
的正方体
中,点
是棱
的中点,点
是线段
上的一个动点.现有以下命题:①三棱锥
的体积是定值;②
的周长的最小值为
;③直线
与平面
所成的角是定值;④异面直线
与
所成的角是定值.其中真命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5210296963a878798a2d324e981457d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0864f09d6bc3c8aacddcf347972d2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b0c19b40d6b231d4a9f30c18a18119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
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5卷引用:安徽省淮南市2021届高三下学期4月第二次模拟考试理科数学试题
安徽省淮南市2021届高三下学期4月第二次模拟考试理科数学试题四川省资阳中学校2021-2022学年高二上学期期中考试数学(理)试题四川省安岳县石羊中学2022-2023学年高二上学期期中检测数学理科试题四川省安岳县石羊中学2022-2023学年高二上学期期中检测数学文科试题(已下线)第四章 立体几何解题通法 专题一 降维法 微点3 降维法(三)【基础版】
4 . 如图,四边形
是边长为
的正方形,
平面
,
平面
,
,则异面直线
与
所成角的余弦值为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/a83a3bb9-6464-4dc5-8cd2-22d878cb5e47.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b5a90e556da12d63b7f481bd8e874c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d619a8ba5f74af374d2d2cb3c90871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/a83a3bb9-6464-4dc5-8cd2-22d878cb5e47.png?resizew=168)
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2020-03-21更新
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6卷引用:安徽省安庆市怀宁县第二中学2020-2021学年高二上学期期中数学(文)试题
5 . 如图在直三棱柱
中,
为等腰直角三角形,且
,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895617439596544/2908472550268928/STEM/344c6c28-7e53-4d6d-ac42-6c4ec95cbd13.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93077982faf30e933efc3a3507b3c9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895617439596544/2908472550268928/STEM/344c6c28-7e53-4d6d-ac42-6c4ec95cbd13.png?resizew=139)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
6 . 如图,在三棱柱
中,
平面
,四边形
为正方形,
,
,D为
的中点,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2020/7/9/2501761716486144/2502439733829632/STEM/e7366574673a46cf92958a2be346658f.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1391573c30964b87ca3429bf67ae22aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35850dbc661ded6456b70767cc6cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2020/7/9/2501761716486144/2502439733829632/STEM/e7366574673a46cf92958a2be346658f.png?resizew=158)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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|
6卷引用:安徽省名校2019-2020学年高一下学期期末联考数学试题
名校
解题方法
7 . 如图一副直角三角板,现将两三角板拼成直二面角,得到四面体
,则下列叙述正确的是( )
①平面
的法向量与平面
的法向量垂直;
②异面直线
与
所成的角的余弦值为
;
③四面体
有外接球且该球的半径等于棱BD长;
④直线
与平面
所成的角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/2637fbfb-d519-4a26-9742-778fabfc686a.png?resizew=251)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
②异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041bac006360df1095a51b078765ef6d.png)
③四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/2637fbfb-d519-4a26-9742-778fabfc686a.png?resizew=251)
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3卷引用:安徽省合肥市第一中学2021-2022学年高二下学期3月测试数学试题
安徽省合肥市第一中学2021-2022学年高二下学期3月测试数学试题黑龙江省哈尔滨德强学校2021-2022高三(清北班)上学期期中线下考试数学(理)试题(已下线)解密12 空间向量在空间几何体中应用(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)
名校
8 . 在四棱锥
中,底面梯形
中
,
,
,
与
交于
点,
,连接
,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b88c9beaca6a4bc378ba0cb7ff6e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c327b3e91d8bea53255d9308a952a276.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c931f80a4e667b5e1c6aa49b5024af7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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2卷引用:安徽省黄山市2022届高三下学期第二次质量检测文科数学试题
名校
解题方法
9 . 已知在底面为菱形的直四棱柱
中,
,若
,则异面直线
与
所成的角为( )
![](https://img.xkw.com/dksih/QBM/2021/1/5/2629766680559616/2629807345893376/STEM/588e4845-e55d-406d-ad76-d2c1f5e5722d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24638c3526907f8370af25ad77b3efe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a46dc0bb5d8fa33583817e530a5d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://img.xkw.com/dksih/QBM/2021/1/5/2629766680559616/2629807345893376/STEM/588e4845-e55d-406d-ad76-d2c1f5e5722d.png)
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2021-01-05更新
|
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8卷引用:安徽省池州市第一中学2019-2020学年高二上学期期中教学质量检测数学试题
安徽省池州市第一中学2019-2020学年高二上学期期中教学质量检测数学试题【衡水金卷压轴卷】2018年普通高等学校招生全国统一考试模拟试题文科数学(二)试题【校级联考】山西省吕梁市泰化中学2018-2019学年高二上学期第一次月考数学试卷(已下线)专题8.3 空间点、直线、平面之间的位置关系(练)-浙江版《2020年高考一轮复习讲练测》(已下线)专题8.3 空间点、直线、平面之间的位置关系(精练)-2021年新高考数学一轮复习学与练(已下线)专题8.3 空间点、直线、平面之间的位置关系(练)-2021年新高考数学一轮复习讲练测(已下线)【新东方】绍兴qw113(已下线)8.6空间直线、平面的垂直(2)(精炼)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)
10 . 图,在长方体
中,
,E,F分别为棱
的中点,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fdaabe77c20f07d3e44dc27d703ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1797b6b52b9ef3d5a39cfc583bafac80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/e5918535-9280-4d87-bcce-9571ac9cf1cc.png?resizew=179)
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4卷引用:安徽省“皖东县中联盟”2021-2022学年高三上学期期末联考文科数学试题