名校
1 . 已知三棱锥
的各条棱均相等,P,Q分别为棱
,
的中点,则直线
和直线
所成角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.30° | B.45° | C.60° | D.90° |
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解题方法
2 . 在正方体
中,E、F分别为
和
的中点,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
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3 . 如图,在三棱柱
中,底面为正三角形,侧棱垂直于底面,
,
.若E是棱
上的点,且
,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2021/1/2/2627040343883776/2629805894098944/STEM/99a5281793a541399f958ceb9c92369e.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78dad90976744e086e8bc69c4a0cbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/2021/1/2/2627040343883776/2629805894098944/STEM/99a5281793a541399f958ceb9c92369e.png?resizew=153)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 如图所示,三棱柱
所有棱长均相等,各侧棱与底面垂直,
,
分别为棱
,
的中点,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/d63a5ba9-2de2-4c8c-9486-ff118799f362.png?resizew=128)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/d63a5ba9-2de2-4c8c-9486-ff118799f362.png?resizew=128)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-09-04更新
|
850次组卷
|
7卷引用:安徽省蚌埠市田家炳中学2020-2021学年高二上学期10月月考数学(理)试题
名校
5 .
,
分别为菱形
的边
,
的中点,将菱形沿对角线
折起,使点
不在平面
内,则在翻折过程中,下列选项正确的是( )
①
平面
;②异面直线
与
所成的角为定值;③在二面角
逐渐变小的过程中,三棱锥
外接球的半径先变小后变大;④若存在某个位置,使得直线
与直线
垂直,则
的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f00f2f6ab162f9333ec55db195d663b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/13/c94f3cdc-eca0-497e-ad0f-424a7aa8b625.png?resizew=339)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0ac3005d5ecd6d4cea0ce99a47ef3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f00f2f6ab162f9333ec55db195d663b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/13/c94f3cdc-eca0-497e-ad0f-424a7aa8b625.png?resizew=339)
A.①② | B.①②④ | C.①④ | D.①②③④ |
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2020-09-01更新
|
865次组卷
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8卷引用:安徽省卓越县中联盟2020-2021学年高二上学期期中联考数学(理)试题
安徽省卓越县中联盟2020-2021学年高二上学期期中联考数学(理)试题四川省内江市第六中学2020届高三热身考试数学(理)试题(已下线)黄金卷12-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(山东高考专用)(已下线)必刷卷04-2021年高考数学考前信息必刷卷(江苏专用)2023年3月河北省普通高中学业水平合格性考试模拟(十)数学试题四川省成都市锦江区嘉祥外国语高级中学2023-2024学年高三上学期入学考试理科数学试题四川省成都市金牛区成都七中万达学校2023-2024学年高三上学期期中理数试题(已下线)第二章 立体几何中的计算 专题六 几何体的外接球、棱切球、内切球 微点14 多边形折叠成模型综合训练【基础版】
名校
解题方法
6 . 如图,在正方体
中,异面直线
与
所成的角为( )
![](https://img.xkw.com/dksih/QBM/2020/11/30/2603963940560896/2607442918400000/STEM/8a13e4da102f441b91aab6468f1ecf26.png?resizew=208)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/2020/11/30/2603963940560896/2607442918400000/STEM/8a13e4da102f441b91aab6468f1ecf26.png?resizew=208)
A.90° | B.60° | C.45° | D.30° |
您最近一年使用:0次
2020-12-05更新
|
590次组卷
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10卷引用:安徽省阜阳市红旗中学2018-2019学年高一第一学期期末考试数学(文科)试题
安徽省阜阳市红旗中学2018-2019学年高一第一学期期末考试数学(文科)试题安徽省合肥市第十一中学2019-2020学年高二上学期期中数学(理)试题安徽省合肥市第十一中学2020-2021学年高二上学期期中数学(理)试题【校级联考】广东省中山一中等七校联合体2019届高三第二次(11月)联考数学文试题宁夏石嘴山市第三中学2018-2019学年高一上学期期末考试数学试题甘肃省平凉市静宁县第一中学2019-2020学年高一上学期期末数学试题2019-2020学年高一上学期期末复习1月第02期(考点09)-《新题速递·数学》(已下线)第六章 立体几何初步(能力提升)-2020-2021学年高一数学单元测试定心卷(北师大2019版必修第二册)江苏省苏州国际外语学校2018-2019学年高一下学期期中数学试题广东省揭阳市普宁市华侨中学2021-2022学年高一下学期期中数学试题
名校
7 . 已知正方体
的棱长为1,则直线
与直线
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75d14708e6aa1404477db9d7e3166f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-08-07更新
|
498次组卷
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5卷引用:安徽省合肥市第十一中学2020-2021学年高二上学期第一次月考数学(理)试题
8 . 如图,在正方体
中,异面直线
与CD所成的角为( )
![](https://img.xkw.com/dksih/QBM/2020/8/5/2521508015955968/2522278403088384/STEM/8c3b46d413264239ae09ee586dcfa07e.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/2020/8/5/2521508015955968/2522278403088384/STEM/8c3b46d413264239ae09ee586dcfa07e.png?resizew=169)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:安徽省亳州市涡阳县第九中学2019-2020学年高一下学期期末数学试题
9 . 已知正三棱柱ABC-A1B1C1中,底面边长AB=2,
,则异面直线AB1与BC所成角的余弦值( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:安徽省合肥市肥东县第二中学2020-2021学年高二上学期第一次月考数学(理)试题
10 . 在长方体
中,
,
,
,
分别是
,
的中点,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500980319559680/2501550599413760/STEM/d58398b903e54236a280048b5e0a2918.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c934996d34643d7ca1df55230d5a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500980319559680/2501550599413760/STEM/d58398b903e54236a280048b5e0a2918.png?resizew=145)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:安徽省名校学术联盟2020届高三下学期押题卷文科数学试题