名校
解题方法
1 . 如图,在四棱锥
中,
,
,
,
,平面
平面
.
;
(2)若
,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a14895e4d42943e5a87ba078dd8268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b1be8e687141995be29836c8fde4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf6c62979a7aa534a191d8387a741e8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b610c9b9948d88eda8de0fb8d1cf972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9425630dcfe5a824c44904d4f71e13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2024-05-08更新
|
1763次组卷
|
4卷引用:河南省郑州市郑中国际学校2023-2024学年高一下学期第二次月考(5月)数学试题
河南省郑州市郑中国际学校2023-2024学年高一下学期第二次月考(5月)数学试题北京市东城区2023-2024学年高三下学期综合练习(二)(二模)数学试题(已下线)专题04 第八章 立体几何初步(2)-期末考点大串讲(人教A版2019必修第二册)(已下线)专题08 立体几何大题常考题型归类-期末考点大串讲(人教B版2019必修第四册)
2024高三·全国·专题练习
名校
解题方法
2 . 如图,甲站在水库底面上的点D处,乙站在水坝斜面上的点C处,测得从D,C到库底与水坝的交线AB的距离分别为
m,
m.又测得AB的长为5 m,CD的长为
m,则水库底面与水坝斜面所成的二面角的大小为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff84d961181b0c49c2ce7b91fdafb6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9b359d2963675ac8330457e04b96fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe3f2861eb1e47017dc3b90bff5db717.png)
您最近一年使用:0次
3 . 如图,在四棱锥
中,底面
是矩形,
,
,
与
交于点O,
底面
,
,点E,F分别是棱
,
的中点,连接
,
,
.
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6f007dbf1c1a36eb031e520608403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbaf1775f62352ee64d74c1ed3a2e4c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e61620a272dada8d4b9a9fab6379dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598c4ff9fc8518fa4829e39254d3f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c406c4f1880daebcccf913ba3f93512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392e71a9d1ebe4577f785581d0142305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7609a1407f1e965fc9f1235552dcf9e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3211ae598ffd129bd86c914b4ab65f3.png)
您最近一年使用:0次
2024-04-22更新
|
1066次组卷
|
3卷引用:河南省信阳市新县高级中学2024届高三考前第一次适应性考试数学试题
4 . 如图1,已知正方形
的中心为
,边长为
分别为
的中点,从中截去小正方形
,将梯形
沿
折起,使平面
平面
,得到图2.
平面
;
(2)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd47f92c374cfcf7010ea0d421210580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630754333e7043c573d0ecdb64cf1246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99dcd0afaef9dc32697c8bc480b1fd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc61a86aa346c6c4b37cf60c0ea07d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40cbcf7b3bc282c656e1f266a12ee32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c9b06cf3913c7e81a8ea88a8836714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7e1bac4fc939a3af4dd3601617798d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb86687f6014ddc386829090a3e7ae4.png)
您最近一年使用:0次
2024-04-03更新
|
350次组卷
|
5卷引用:河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题
河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题(北师大版)(已下线)专题20 平面与平面的位置关系-《重难点题型·高分突破》(苏教版2019必修第二册)(已下线)专题13.5空间平面与平面的位置关系-重难点突破及混淆易错规避(苏教版2019必修第二册)陕西省西安市高新第一中学2023-2024学年高一下学期第二次月考数学试题
5 . 如图所示,在四棱锥
中,
底面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/3213df0b-c6b4-4afd-9f3f-99f55f4fcc80.png?resizew=151)
(1)求证:
;
(2)若
,求平面
和平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d40978fbe52316daaaa6bdbb403fea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ee81b6066188abee9d167b6c7f3f71.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/3213df0b-c6b4-4afd-9f3f-99f55f4fcc80.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5d56d8170b764b80a672cd6c861921.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2751630b7353ff6bce1e8e06a2a424e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
名校
解题方法
6 . 已知圆锥的顶点为
,底面圆心为
,
为底面直径,
,
,点
在底面圆周上,且点
到平面
的距离为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b3bfde4b7cbca10de7d63bb7b2cfd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
A.该圆锥的体积为![]() | B.直线![]() ![]() ![]() |
C.二面角![]() ![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
2024-02-05更新
|
212次组卷
|
4卷引用:河南省郑州市宇华实验学校2023-2024学年高二下学期开学摸底考试数学试题
河南省郑州市宇华实验学校2023-2024学年高二下学期开学摸底考试数学试题山东省威海市2023-2024学年高二上学期期末考试数学试题(已下线)专题08 立体几何异面直线所成角、线面角、面面角及平行和垂直的证明 -《期末真题分类汇编》(北师大版(2019))(已下线)高一数学期末模拟试卷02-《期末真题分类汇编》(北师大版(2019))
名校
解题方法
7 . 如图所示,多面体
中,底面
为正方形,四边形
为矩形,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/5986d921-133e-450b-bf19-06dfb0ab54b3.png?resizew=210)
(1)求平面
与平面
所成二面角大小;
(2)点P在线段
上,当
平面
时,求
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8daff96303a07819bd4ee47731e73b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/5986d921-133e-450b-bf19-06dfb0ab54b3.png?resizew=210)
(1)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6439082496df7567acd5a31a3448db71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669bf000351b4a5b48d7322ef8e720a1.png)
(2)点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf9403ecd2ae90269297499ba6c7182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6439082496df7567acd5a31a3448db71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2024-01-05更新
|
221次组卷
|
2卷引用:河南省信阳市信阳高级中学2024届高三上学期第六次大考数学试题
8 . 如图所示,已知四棱锥
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/f46fc4f2-dc7b-4ace-8501-d03e7b61912d.png?resizew=171)
(1)求证:
平面
;
(2)当四棱锥
的体积最大时,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939f353a411d07176c1e2c064ef07322.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/f46fc4f2-dc7b-4ace-8501-d03e7b61912d.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
您最近一年使用:0次
名校
解题方法
9 . 已知三棱锥
,则下列论述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
A.若点S在平面![]() ![]() ![]() |
B.若点S在平面![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-12-18更新
|
740次组卷
|
3卷引用:河南省湘豫名校2024届高三上学期12月联考数学试题
名校
解题方法
10 . 在直三棱柱
中,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/4dec8c6f-e136-4cbd-bcf8-940ee32bd106.png?resizew=158)
(1)若
,
,求
的长;
(2)若
,
,求二面角
的平面角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc066612750ff9ea9afc3811136d3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/4dec8c6f-e136-4cbd-bcf8-940ee32bd106.png?resizew=158)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e98f6c5fef5381fe6a91527625bafb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba6f959bebfef7acf5c4f8c804ea75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ea83f97a392b95455c8849ce3b2e75.png)
您最近一年使用:0次