1 . 如图,在正三棱柱
中,
,
,
、
分别为
、
的中点.
(1)求证:
平面
;
(2)求点
到平面
的距离;
(3)求
与平面
所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef8866ccf160ddc441bf69c5d3a3d5a.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/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/21/be8ba34c-255c-4834-9ec8-45449e7fc99a.png?resizew=124)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在四棱锥
中,底面ABCD是矩形,
平面ABCD,
,E,M分别为线段AB,PC的中点,连接CE,延长CE并与DA的延长线交于点F,连接PE,PF.
(1)求证:
平面PFD.
(2)求平面APE与平面PEF所成角的正弦值.
![](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/a48a7409e1a2071eccd3a0a0ac1699d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/28/d67539d0-30c7-41c1-a7da-8845a46f2fca.png?resizew=200)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb841d975d5c7ab05598040e99df6825.png)
(2)求平面APE与平面PEF所成角的正弦值.
您最近一年使用:0次
2023-06-25更新
|
392次组卷
|
3卷引用:海南省海口市龙华区海南华侨中学2023届高三一模数学试题
海南省海口市龙华区海南华侨中学2023届高三一模数学试题海南省省直辖县级行政单位临高县新盈中学2024届高三上学期11月期中考试数学试题(已下线)第09讲 拓展三:二面角的传统法与向量法(含探索性问题,7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)
名校
解题方法
3 . 如图,正方体
的棱长为1,E,F,G分别为线段
上的动点(不含端点),
与AF所成角可以为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
②当G为中点时,存在点E,F使直线
与平面AEF平行
③当E,F为中点时,平面AEF截正方体所得的截面面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4700efcb84c4027ce7a50af0d5212fc.png)
④存在点G,使点C与点G到平面AEF的距离相等
则上述结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473ce0e22c4edc6ef768e0c12f59e483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3334853138fb74687d66b1e45f2fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
②当G为中点时,存在点E,F使直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04777f3f4661fa1c08a1cc0dfb807c7d.png)
③当E,F为中点时,平面AEF截正方体所得的截面面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4700efcb84c4027ce7a50af0d5212fc.png)
④存在点G,使点C与点G到平面AEF的距离相等
则上述结论正确的是( )
A.①③ | B.②④ | C.②③ | D.①④ |
您最近一年使用:0次
2023-05-28更新
|
1173次组卷
|
5卷引用:海南省海口市第四中学2023-2024学年高二上学期第一次月考数学试题
海南省海口市第四中学2023-2024学年高二上学期第一次月考数学试题北京市第十一中学2023届高三三模(5月)数学试题(已下线)高一下册数学期末考试综合础评估卷2-【超级课堂】四川天府新区太平中学2022-2023学年高二毕业班摸底测试(理科)(一)试题(已下线)第02讲 空间点、直线、平面之间的位置关系(六大题型)(讲义)-1
名校
4 . 如图,在四棱锥
中,侧面
底面
,侧棱
,底面
为直角梯形,其中
,
,
,
.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
平面
;
(2)在线段
上是否存在一点H,使得
与平面
所成角的余弦值为
?若存在,求出线段
的长度;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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1328e05d150f86dbe18656662eaa8f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a755edadca4e4fc27fd49559b8d691ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a93f5289c1483bc39b0125fdc8dd67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90cedede842402ba212e3ab909893b0b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/1/70317a3a-1513-442c-85c8-4b2ea9b22b6b.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c29c3bfdae2d4fbe8a8deaa572a2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
您最近一年使用:0次
2023-09-29更新
|
615次组卷
|
4卷引用:海南昌茂花园学校2022-2023学年高二上学期期中考试数学试题
5 . 如图所示,在五面体EF-ABCD中,底面ABCD为正方形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/2368d71a-7d59-457a-867c-64c143b717d2.png?resizew=205)
(1)求证:
;
(2)若
,点G为线段ED的中点,求直线DF与平面BAG所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b7f93bcf621d7a3abd80bb3e3d64a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/2368d71a-7d59-457a-867c-64c143b717d2.png?resizew=205)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3f58c56ea4208b11b56a343ea1de26.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ddbc8ee56d8d755bc4e028c6b926d8.png)
您最近一年使用:0次
解题方法
6 . 如图,
与
都是边长为
的正三角形,平面
平面
,
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/6527f062-9a12-4c89-b226-d4d2c67b814d.png?resizew=136)
(1)证明:
平面
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781e6927e3bc512359dc8b0c11e195d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c72b92177ddfe056e6f90af4f37e64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ddad21a6de8f54e65123d274c0098c8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/6527f062-9a12-4c89-b226-d4d2c67b814d.png?resizew=136)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在四棱锥
中,
底面
,且底面
为正方形,
,
,
,
,
分别是
,
,
,
的中点.过点
作
,垂足为
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/d1fbb051-141d-4712-b78e-7cee3ec55df1.png?resizew=174)
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4c15fb8fc3239d45bd4e7d8971f58e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/d1fbb051-141d-4712-b78e-7cee3ec55df1.png?resizew=174)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.平面![]() ![]() |
您最近一年使用:0次
2023-05-03更新
|
410次组卷
|
2卷引用:海南省2023届高三学业水平诊断(三)数学试题
8 . 如图,在五面体
中,四边形
是正方形,
,
,
,
,点
,
在平面
内的射影落在
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/819bbf4b-1d35-46ec-acd3-af3c45ca5a0c.png?resizew=141)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)设
为
的中点,求二面角
的余弦值.
![](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/333c00b9a8e6485b44478b7343238601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a32884afd5c49777628d70827a9d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70099a8a0e7cff25485a63e8811a6aab.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/819bbf4b-1d35-46ec-acd3-af3c45ca5a0c.png?resizew=141)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da46939fd9cffe0fe9267b66b6207ba.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,正三棱柱
的底面边长是2,侧棱长是
,M为
的中点,N是侧面
上一点,且
∥平面
,则线段MN的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
您最近一年使用:0次
2023-04-13更新
|
1206次组卷
|
3卷引用:海南省海口市海南中学2022-2023学年高一下学期期中考试数学试题
海南省海口市海南中学2022-2023学年高一下学期期中考试数学试题陕西省榆林市2023届高三三模文科数学试题(已下线)专题19 平面与平面平行-《重难点题型·高分突破》(人教A版2019必修第二册)
10 . 如图,在三棱柱
中,底面
是以
为斜边的等腰直角三角形,侧面
为菱形,点
在底面上的投影为
的中点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/8/014ac585-9426-41b3-b3f4-a0f5f25bd2e9.png?resizew=179)
(1)若
、
分别为棱
、
的中点,求证:
平面
;
(2)
为
的中点,求直线
与侧面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.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/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/8/014ac585-9426-41b3-b3f4-a0f5f25bd2e9.png?resizew=179)
(1)若
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22391e2f16997bb4b99041f8543b2ab.png)
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