名校
1 . 在四棱锥
中,已知
,
,
,
,
,
是线段
上的点.
底面
;
(2)是否存在点
使得
与平面
所成角的余弦值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251dc163e6db632d7b0ed3ce94f43aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60964e720188e325eb18c9528b1fa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3c2e2199cd4565c05b949bc21fc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85aeab3aeaf4367b711da8cde2e8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe2c533dbc23a34518f72f3cb14f330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb4402e082c123111c12fc6cc3acbc9.png)
您最近一年使用:0次
2024-03-06更新
|
3226次组卷
|
8卷引用:河南省漯河市高级中学2024届高三下学期3月检测数学试题(一)
河南省漯河市高级中学2024届高三下学期3月检测数学试题(一)四川省成都市第七中学2024届高三下学期二诊模拟考试理科数学试卷(已下线)第3讲:立体几何中的探究问题【练】(已下线)2024年高考数学全真模拟卷08(新题型地区专用)湖北省黄冈市浠水县第一中学2024届高三下学期第二次模拟考试数学试题福建省福州格致中学2023-2024学年高二下学期3月限时训练(月考)数学试卷(已下线)模块3 第3套 全真模拟篇(已下线)信息必刷卷02(北京专用)
名校
2 . 如图,在四棱锥
中,底面
是正方形,侧棱
底面
,二面角
的大小是
,
分别是
的中点,
交
于点
.
![](https://img.xkw.com/dksih/QBM/2023/12/22/3394612672372736/3394646863216640/STEM/b86a51644a3545a19f66a639dbd586d5.png?resizew=212)
(1)求证:
平面
;
(2)设
是直线
的中点,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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01882f77f211b5b82111bc2953f01d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747b8ebe5839aba1c514dd0aa7f18d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2023/12/22/3394612672372736/3394646863216640/STEM/b86a51644a3545a19f66a639dbd586d5.png?resizew=212)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479863cf9f41e2ad9f843ea740a3c0.png)
您最近一年使用:0次
2023-12-22更新
|
443次组卷
|
3卷引用:河南省信阳市宋基信阳实验中学2023-2024学年高二上学期期末复习数学测评卷(五)
名校
3 . 如图,在多面体
中,四边形
是平行四边形,
平面
,
,平面
平面
.
;
(2)若
,
,求平面
与平面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e89556992cbfd7043330ac7421d342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2af93a2d53f7be058e4871f791c136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf84ed033bd035c2fe7552badd5e447d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eed15d0ed75bf936f224f931da5d950.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dfaabe2b62605491afc5d1120bd3306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5741d6333e1e34f33998418e1ba19f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在三棱锥
中,
分别是线段
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/8d49c433-aa50-44ba-ba77-74a1d6696682.png?resizew=131)
(1)求证:
平面
;
(2)若二面角
的余弦值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfa997d03be071dcd31893c67346be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b691cf4f8fb736448e10447184e6de3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6bdfb0e1be5583e794ab614a8abe1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fab8809915a89426395187aca7af02a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/8d49c433-aa50-44ba-ba77-74a1d6696682.png?resizew=131)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ea10539215794cd76e8b211abd503f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
您最近一年使用:0次
2023-12-13更新
|
783次组卷
|
5卷引用:河南省部分重点中学2024届高三上学期阶段性测试(四)数学试题
名校
5 . 如图,在四棱锥
中,底面
为正方形,
底面
,
,点
为线段
的中点,点
为线段
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/547d5c8b-6f6e-4f71-ae8c-54ecb756edca.png?resizew=164)
(1)求证:平面
平面
.
(2)试确定点
的位置,使平面
与平面
所成的锐二面角为
.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/547d5c8b-6f6e-4f71-ae8c-54ecb756edca.png?resizew=164)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)试确定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
您最近一年使用:0次
2023-11-26更新
|
156次组卷
|
12卷引用:河南省南阳市第二中学校2022-2023学年高二上学期12月月考数学试题
河南省南阳市第二中学校2022-2023学年高二上学期12月月考数学试题福建省福州市2019-2020学年高三上学期期末质量检测数学(理)试题2020届湖南省长沙市长望浏宁四县高三下学期4月联考理科数学试题广东省佛山市第一中学2022届高三上学期12月月考数学试题山东省实验中学2021-2022学年高三下学期3月诊断训练数学试题广西桂林、崇左、贺州、河池、来宾市2022届高三联合高考模拟考试数学(理)试题广东省揭阳市惠来县第一中学2021-2022学年高二下学期第一次段考数学试题广东省惠州市(惠阳中山中学、龙门中学、惠州仲恺中学)三校2023届高三上学期第一次质量检测数学试题福建省福州华侨中学2023届高三上学期第二次考试数学试题湖北省宜昌市部分省级示范高中2023-2024学年高二上学期11月月考数学试卷广东省韶关市广东北江实验学校2023-2024学年高二上学期第二次月考(12月)数学试题(已下线)模块三 专题4 大题分类练(立体几何)拔高能力练
名校
解题方法
6 . 所有棱长均为3的三棱柱
中,平面
平面
,D,E分别在棱
,
上,满足
,
,且
.
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5537b792d7bdbd7ece5cb0448d2626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b9013dd89d220d0775e787d34a2b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcbde67cc84757b10bb66c47cee22de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319d234a0586478d4e73020d48b3a10.png)
您最近一年使用:0次
2024-05-09更新
|
521次组卷
|
2卷引用:河南省郑州市宇华实验学校2023-2024学年高二下学期4月期中考试数学试题
解题方法
7 . 如图,四棱锥
中,四边形ABCD为梯形,
,
,
,
,
,M,N分别是PD,PB的中点.
(1)求证:直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
平面
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6fc789505420e3db2325a9c3721d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1806bb5466e7279fd46f602ab1b473f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ff26d9121c651ed648f0eafe293fd6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/b42b774a-e654-4c80-b84d-f77d0681c301.png?resizew=142)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d451324445a93eb518abdc2bd9a4733.png)
您最近一年使用:0次
2023-09-05更新
|
996次组卷
|
6卷引用:河南省商丘市等2地2023届高三三模文科数学试题
河南省商丘市等2地2023届高三三模文科数学试题(已下线)阶段性检测3.3(难)(范围:集合至立体几何)(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2 空间直线垂直的判定与证明综合训练【培优版】(已下线)艺体生一轮复习 第七章 立体几何 第33讲 空间中的平行关系【练】 (已下线)第13讲 8.6.2直线与平面垂直的性质定理 (第2课时)-【帮课堂】(人教A版2019必修第二册)(已下线)专题7.2 空间中的位置关系【十大题型】
8 . 如图,在多面体
中,四边形
为菱形,四边形
为矩形,且
,
是线段
上的一个动点,且
.
为何值时,
∥平面
,并给出证明;
(2)若平面
与平面
夹角的余弦值为
,求
的值.
![](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/d3da6e90f9c9617cd495abb57ab9b0e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30d86aeafba9f975038c373dbfaf5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a9f00d5798e091fff6c21b2919e9f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb7c2ca1b6bee86cb24fed02e40da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e468f168f3657d84d44be5eb89a62d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,四边形
是平行四边形,
为
的中点.以
为轴,将
折起,使得点
到达点
的位置,且平面
平面
,以
为轴,将
折起,使得点
到达点
的位置,且平面
平面
,设平面
平面
直线
.
(1)求证:直线
平面
;
(2)若
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36711ad74b021f54aead173d0f921a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b43490ca09467a4c8cd8cfe91c94e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69bdfd1d2f169de02d3aaa28f909da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c3c8bf858c13b295de56e548116db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddff1f8e4917fd874d948a4066143b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8853e37f9d99117010bde0d090e6221b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e9c3cf67b99fbd34863e2675620119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/0e267206-d6db-402a-a510-ab28ca1a127e.png?resizew=170)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c57bf84b9d2fe29a0b869b4d5ee57f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6221be113e161825e54d48a2fb16d516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2024-01-30更新
|
118次组卷
|
2卷引用:河南省焦作市博爱县第一中学2023-2024学年高二下学期开学摸底考试数学试题
10 . 如图,四棱锥的底面
是边长为
的菱形,
,
,
,平面
平面
,E,F分别为
,
的中点.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
您最近一年使用:0次
2023-11-07更新
|
621次组卷
|
5卷引用:河南省焦作市博爱县第一中学2023-2024学年高二上学期期中数学试题