名校
解题方法
1 . 如图,
平面
,
,
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805f923318ab818c77ad9b767a2af065.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/7cc0da43-8e5e-47cf-9c2f-51f585d3ca98.png?resizew=171)
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e952f7b05d06917128bfecb64fe3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04ab8b50f9e76c5fa2a0c3b5c1debf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805f923318ab818c77ad9b767a2af065.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/7cc0da43-8e5e-47cf-9c2f-51f585d3ca98.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f636f76d550dfb593a25eb680cff556.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f636f76d550dfb593a25eb680cff556.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f636f76d550dfb593a25eb680cff556.png)
您最近一年使用:0次
2023-11-21更新
|
502次组卷
|
4卷引用:天津市东丽区2023-2024学年高二上学期期中数学试题
名校
2 . 如图,在四棱锥
中,底面
为矩形,
平面
,
,
,点
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/14103288-b1c5-433d-9daa-a29ed6faac9f.png?resizew=188)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b610c9b9948d88eda8de0fb8d1cf972.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/ea8ecef114636eab2c939ebc5b84d77e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/14103288-b1c5-433d-9daa-a29ed6faac9f.png?resizew=188)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9068f29d671d76d1e95ba3a4eaff5b96.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9068f29d671d76d1e95ba3a4eaff5b96.png)
您最近一年使用:0次
2023-04-06更新
|
1098次组卷
|
2卷引用:天津市第一百中学2023-2024学年高二上学期过程性诊断数学试题(二)
3 . 在如图所示的几何体中,四边形ABCD是菱形,ADNM是矩形,平面
平面ABCD,
,
,
,E为AB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/2cbe3d99-0ad6-4ada-a1a0-f5087f09682d.png?resizew=190)
(1)求证:
平面MEC;
(2)求ME与平面MBC所成角的正弦值;
(3)在线段AM上是否存在点P,使平面PEC与平面ECD夹角为
,若存在,求出AP的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61804389aabf1e02857b748dd103700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7a42341edbc0b01ab0769c4c02c3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5564681937f41e1489d69b20a71f9222.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/2cbe3d99-0ad6-4ada-a1a0-f5087f09682d.png?resizew=190)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250833a6c405ffd724b673b478c22919.png)
(2)求ME与平面MBC所成角的正弦值;
(3)在线段AM上是否存在点P,使平面PEC与平面ECD夹角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
您最近一年使用:0次
名校
4 . 如图,在直四棱柱
中,
平面
,底面
是菱形,且
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/a396892f-c0a7-4fe4-ba70-40be0c70de4f.png?resizew=250)
(1)求证:
∥平面
;
(2)求证:平面
平面
;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8bfe2553e852df73185d017c0a62fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a69138b166b2a53d994189c8eb29358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/a396892f-c0a7-4fe4-ba70-40be0c70de4f.png?resizew=250)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb66e4fa5ca4231b8ce2490eeb192b.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5cdffeb1fdad9935a00d40c9d650655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb66e4fa5ca4231b8ce2490eeb192b.png)
您最近一年使用:0次
2022-07-07更新
|
1504次组卷
|
5卷引用:天津市军粮城中学2022-2023学年高二上学期期中数学试题
5 . 如图,四棱锥
中,底面
为正方形,
平面
,
、
分别是棱
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/427c4401-61fb-40b3-a654-ac1742db4757.png?resizew=149)
(1)求证:
平面
;
(2)求证:
.
(3)已知正方形
的边长为2,
,求:
①异面直线
所成角的余弦;
②直线
与平面
所成角的正弦.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/427c4401-61fb-40b3-a654-ac1742db4757.png?resizew=149)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c672f693a7e75a7bae4936dcb1920430.png)
(3)已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc532cfe64300cb3da9e04a307c957a.png)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2682f3f3f0f72c893b99073bcac83ff2.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,正方体
的棱长为1,E、F分别为棱AD、BC的中点,则平面
与底面ABCD所成的二面角的余弦值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354ee41dcce9ed93fb835cc6364e8490.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/7c515ad5-387b-40b3-b433-02aa5c409150.png?resizew=171)
您最近一年使用:0次
2022-07-06更新
|
421次组卷
|
2卷引用:天津市东丽区2021-2022学年高一下学期期末数学试题
7 . 如图,在正方体
中,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/0680ac6b-17b8-4444-bfdd-68345d536f5c.png?resizew=169)
(1)求证:
平面
;
(2)求证:
;
(3)求:直线
与平面
所成的角.
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/0680ac6b-17b8-4444-bfdd-68345d536f5c.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f11f1840eb8b17e7b07c3fe7e987a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(3)求:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f73038249a611568193c0bcc286fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
您最近一年使用:0次
2021-08-09更新
|
980次组卷
|
2卷引用:天津市东丽区2019-2020学年高一下学期期末数学试题
解题方法
8 . 若四面体棱长都相等,则相邻两侧面所成的二面角的余弦值为_________ .
您最近一年使用:0次
名校
解题方法
9 . 已知四棱锥P-ABCD,底面ABCD是梯形,AD//BC,AB=BC=2,∠ABC=60°,CD⊥AC,平面PAB⊥平面ABCD,且PA=AD,PB=
,E为PD中点,AF⊥PC,垂足为F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/f21a8340-a81f-47d8-a1b6-de5929dfbac9.png?resizew=179)
(1)求证:PA⊥平面ABCD;
(2)求异面直线AB与CE所成的角;
(3)求证:PD⊥EF.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/f21a8340-a81f-47d8-a1b6-de5929dfbac9.png?resizew=179)
(1)求证:PA⊥平面ABCD;
(2)求异面直线AB与CE所成的角;
(3)求证:PD⊥EF.
您最近一年使用:0次
2021-07-20更新
|
928次组卷
|
2卷引用:天津市第一百中学2019-2020学年高一下学期期末数学试题
名校
10 . 如图,直三棱柱
中,底面边长AB=5,BC=4,AC=3,侧棱长为
,D为BC中点,CE⊥AD,E为垂足.
//平面
;
(2)求证:平面
⊥平面
;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475d9dbaac17f65044500bd8fad9a135.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2eb89294b31ffdd2680b4361e8994d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475d9dbaac17f65044500bd8fad9a135.png)
您最近一年使用:0次
2021-07-20更新
|
1177次组卷
|
3卷引用:天津市第一百中学2019-2020学年高一下学期期末数学试题