1 . 如图,在四面体ABCD中,E,F分别是线段AD,BD的中点,
,
,
.
(1)证明:
平面BCD;
(2)若平面DAB与平面CAB的夹角为
,求平面ACE与平面BCE的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b19bfed56d8c7bd9067ee4d23dae0dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb6e4368e1158045340ea765cc318b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a05e0ab55e325fb3b85fc8ca9c27c76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/1da284e7-d930-4fa3-ad5a-7ae272b1e3ea.png?resizew=133)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
(2)若平面DAB与平面CAB的夹角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
您最近一年使用:0次
名校
2 . 如图,在正方体
中, E、F分别是
,CD的中点,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/31/0f0c7a82-57ad-4b44-97d8-ae3743d42b52.png?resizew=159)
(1)求证:
平面ADE;
(2)求异面直线EF,CB1所成的角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/31/0f0c7a82-57ad-4b44-97d8-ae3743d42b52.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36df8302f33f07a69cef14c3b822902.png)
(2)求异面直线EF,CB1所成的角
您最近一年使用:0次
2023-10-13更新
|
463次组卷
|
8卷引用:广东省潮州市湘桥区南春中学2021-2022学年高二上学期第一次月考数学试题
名校
解题方法
3 . 已知两条不同直线
,两个不同平面
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ccc19a183b9ce7f82d2609a14b9a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-09-05更新
|
1067次组卷
|
12卷引用:广东省潮州市2020-2021学年高一下学期期末数学试题
广东省潮州市2020-2021学年高一下学期期末数学试题2020届广东省珠海市高三三模数学(理)试题贵州省毕节市威宁县2019-2020学年高一下学期期末考试数学试题湖南省长沙市长郡中学2019-2020学年高一下学期期末考试数学试题江西省南昌县莲塘县第三中学2019-2020学年高二下学期期末考试数学(理)试题江西省南昌县莲塘第三中学2019-2020学年下学期期末考试数学(文)试题广东省奥林匹克中学2021-2022学年高二上学期开学考数学试题湖南省岳阳市临湘市2021-2022学年高一下学期期末数学试题湖南省岳阳市湘阴县2021-2022学年高一下学期期末数学试题湖南省株洲市炎陵县2023-2024学年高二上学期入学考试数学试题(已下线)第一章 点线面位置关系 专题二 空间垂直关系的判定与证明 微点4 空间垂直关系的判定与证明综合训练【培优版】安徽省合肥一六八中学2024届高三“九省联考”考后适应性测试数学试题(三)
名校
4 . 如图,在四棱锥
中,底面
为直角梯形,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/0505dfdb-ecc5-4845-86db-5230d642fba2.png?resizew=155)
(1)证明:
平面
;
(2)已知
,
,
,且
,求平面
与平面
的夹角的余弦值.
![](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/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/0505dfdb-ecc5-4845-86db-5230d642fba2.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71826134c3080aa75becc655a9089855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c54d01623f09f23103f03ba1135fc6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b489c25405ce48699d4f0a62820bed.png)
您最近一年使用:0次
名校
解题方法
5 . 如图甲,在直角三角形
中,已知
,
,
分别是
,
的中点.将
沿
折起,使点
到达点
的位置,且平面
⊥平面
,连接
,
,得到如图乙所示的四棱锥
,
为线段
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/ec85da7f-e7ce-456d-bef5-2c283e9e35b1.png?resizew=292)
(1)证明:
⊥平面
;
(2)过
三点的平面与线段
相交于点
,直线
与
所成角的大小为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39322ec9605cf16c55f8d9ab1d36e611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce735bef8c7fc6a1ddcebd449e38f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5079c787292561044cc3c1437966a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/ec85da7f-e7ce-456d-bef5-2c283e9e35b1.png?resizew=292)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce735bef8c7fc6a1ddcebd449e38f7e.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27efb0b5177ed50f61946149af0ee4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c20e88a33043f4279fff360c81006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957cc4ab7d44f31b1a08a2cbc4db59e6.png)
您最近一年使用:0次
2022-11-11更新
|
338次组卷
|
3卷引用:广东省潮州市饶平县第二中学2021-2022学年高一下学期期中数学试题
广东省潮州市饶平县第二中学2021-2022学年高一下学期期中数学试题江西省丰城中学2023届高三(重点班)上学期第三次段考数学(文)试题(已下线)专题强化三 直线、平面的平行和垂直问题-2022-2023学年高一数学《考点·题型·技巧》精讲与精练高分突破系列(人教A版2019必修第二册)
名校
解题方法
6 . 在《九章算术》中,将底面为矩形且有一条侧棱与底面垂直的四棱锥称为“阳马”.如图,四棱锥
为阳马,侧棱
底面ABCD,
,E为棱PA的中点,则直线CE与平面PAD所成角的余弦值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0788c2784a2c5bb9f47ffef6902f18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/a5e19bf2-d820-4147-8ccc-bb87dd6e6627.png?resizew=178)
您最近一年使用:0次
2022-07-06更新
|
713次组卷
|
6卷引用:广东省潮州市2021-2022学年高一下学期期末数学试题
广东省潮州市2021-2022学年高一下学期期末数学试题辽宁省鞍山市第三中学2021-2022学年高一下学期期末数学试题(已下线)8.6.2 直线与平面垂直(精讲)(已下线)高一下学期数学期末考试高分押题密卷(五)-《考点·题型·密卷》(已下线)核心考点08空间直线、平面的垂直-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)(已下线)专题03直线与平面的位置关系(4个知识点6种题型)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(沪教版2020必修第三册)
解题方法
7 . 如图,在正方体
中,点P在线段
上运动,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/4503c61a-0b79-4c1e-9535-a339f5182393.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/4503c61a-0b79-4c1e-9535-a339f5182393.png?resizew=173)
A.异面直线AP与![]() ![]() |
B.二面角![]() ![]() |
C.三棱锥![]() |
D.直线![]() ![]() |
您最近一年使用:0次
8 . 如图,在斜三棱柱
中,侧面
侧面
,M为
上的动点.
![](https://img.xkw.com/dksih/QBM/2022/5/12/2977869152043008/2978551241375744/STEM/c0e1748b277e47edae9e7011a4ab8108.png?resizew=174)
(1)当M为
的中点时,证明:
;
(2)求
与平面
所成角的正弦值的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3b8602719b3d371bc9ec6c441bb9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ba78d2852056ee441ede82cfa6c5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2022/5/12/2977869152043008/2978551241375744/STEM/c0e1748b277e47edae9e7011a4ab8108.png?resizew=174)
(1)当M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b87516d02001590a14b4df66bbd469c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
2022-05-13更新
|
973次组卷
|
4卷引用:广东省潮州市2023届高三模拟数学试题
广东省潮州市2023届高三模拟数学试题河北省2022届高三模拟演练(二)数学试题山东省日照市2022届高三下学期5月校际联合考试(三模)数学试题(已下线)专题8-2 立体几何中的角和距离问题(含探索性问题)-1
名校
9 . 如图,四棱锥
中,底面
是梯形,
,
,
是等边三角形,
是棱
的中点,
,
.
平面
;
(2)求直线
与平面
所成角的正弦值.
![](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/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f64511fe313509c365731b419aa6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e921f46d90e43f4517c55832b6280f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2022-04-13更新
|
1027次组卷
|
8卷引用:广东省潮州市松昌中学2022-2023学年高二下学期期末数学试题
名校
10 . 在边长为2的菱形
中,
,点E是边
的中点(如图1),将△
沿
折起到△
的位置,连接
,得到四棱锥
(如图2).
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856774796582912/2857397340241920/STEM/3072bf6d-40a6-47cd-817e-5695c228e50a.png?resizew=505)
(1)证明:
平面
;
(2)若
,连接
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390f612b4fb72c68c2235a06efec140b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db2b1c641b93caae9b7a82441e4ba70.png)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856774796582912/2857397340241920/STEM/3072bf6d-40a6-47cd-817e-5695c228e50a.png?resizew=505)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e241c5ef3753b64cea32138964e06f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
您最近一年使用:0次
2021-11-23更新
|
968次组卷
|
7卷引用:广东省潮州市湘桥区南春中学2021-2022学年高二上学期第二次月考数学试题