1 . 如图,在四棱柱
中,二面角
均为直二面角.
平面
;
(2)若
,二面角
的正弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dff61f54b645b5a0fb9c7a53ac74a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f26accac75d654e05a0cbdd7e9ff902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e866c8eefea85a452590782a7e1f930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5509269c540ac83ba34d2e8a31242903.png)
您最近一年使用:0次
2024-03-27更新
|
636次组卷
|
3卷引用:河南省濮阳市2024届高三下学期第一次模拟考试数学试题
河南省濮阳市2024届高三下学期第一次模拟考试数学试题河南省焦作市2024届高三第二次模拟考试数学试题(已下线)专题06 空间直线﹑平面的垂直(一-《知识解读·题型专练》(人教A版2019必修第二册)
名校
2 . 如图,在
中,
分别为边
上一点,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5812093afe3b23e199fd112faba96.png)
,将
沿
折起到
的位置,使得
为
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/8e520939-058b-44c4-9c34-025e6450188a.png?resizew=257)
(1)求证:
平面
;
(2)若
为线段
上一点(异于端点),且二面角
的正弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4759a4362006aa8d6432bc974c8ad6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5812093afe3b23e199fd112faba96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4aea4de9a527ee8509c7dc69ec99d7.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/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d84f8c9ef2f139809835920f5a5e3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455bdd0ae0b606a2b22427b5a311803c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/8e520939-058b-44c4-9c34-025e6450188a.png?resizew=257)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36222db36e348661eb5f616820e4e60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9881d842baa10bd2f1ca9e50d0877451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74fe624c03051fc4a81383888de774bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019c01a933a1844d9a7909e7bcf1b103.png)
您最近一年使用:0次
解题方法
3 . 如图,在四棱锥
中,四边形
是等腰梯形,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/61adb0b3-e3d0-4151-8169-503e6ab54cdd.png?resizew=149)
(1)证明:平面
平面
;
(2)若
,且
,求二面角
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/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d23382d564259c372ff8e6c99648542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfa54114f04a75b8c96165b3718ed7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/61adb0b3-e3d0-4151-8169-503e6ab54cdd.png?resizew=149)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4b4c90faa3f4e43393b38400ff44b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37002ada5d194d4d062fa3285d7d9824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5651e38293e0c42a7278af69fa53ae.png)
您最近一年使用:0次
2024-03-08更新
|
1141次组卷
|
5卷引用:河南省许平汝名校2023-2024学年高二下学期开学考试数学试题
4 . 如图,在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bb88802effeef9bf6697edd2b06ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/4c1496a9-3964-48df-8827-a2b874a3e344.png?resizew=145)
(1)证明:
为等腰三角形;
(2)若平面
平面
,直线
与平面
所成角的正弦值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bb88802effeef9bf6697edd2b06ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51b89f545616ef48f3706850107ad95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac8a42591124ace3a0ad389d563d839.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/4c1496a9-3964-48df-8827-a2b874a3e344.png?resizew=145)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306b9504b52df5ad6697fa87200e8a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748ce363bf0d656545db3cc6c8d01690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解题方法
5 . 如图,在直四棱柱
中,底面
为菱形,
与
相交于点
平面
.
(1)求
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd53474545a381941d5e205eed660ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74da5c706153b20b3b3df5941a8d7dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/9bdc8334-a3de-4b1b-8a8c-28469bc3a608.png?resizew=153)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
您最近一年使用:0次
名校
解题方法
6 . 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
|
116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
名校
7 . 如图,在三棱锥
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/c49f0574-ff3e-40e5-83c1-718d926d7753.png?resizew=161)
(1)求证:
;
(2)求二面角
平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48f1f0da5854716a873c9bd072693e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/c49f0574-ff3e-40e5-83c1-718d926d7753.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c909cd1b6f3fa1ec39eb245e8f5c11c.png)
您最近一年使用:0次
2024-01-29更新
|
185次组卷
|
3卷引用:河南省焦作市博爱县第一中学2024届高三下学期开学摸底考试数学试题
名校
8 . 已知正三棱锥
,底面
是边长为2的正三角形,若
,且
,则正三棱锥
外接球的半径为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46373b749211e2eb67d1b653b6087856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985905ab3559ed7ec54e745a493629af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
2024-01-29更新
|
140次组卷
|
3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
名校
9 . 如图,在四棱柱
中,底面
是正方形,
,且
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/56d4d6b0-9f2b-4635-8225-e9d68a06434d.png?resizew=200)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7276487c3a2d8e983290f06d4e41869c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a98da23bcf1854edfb21b6d5e56bd5c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/56d4d6b0-9f2b-4635-8225-e9d68a06434d.png?resizew=200)
A.![]() | B.![]() |
C.![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
2024-01-27更新
|
118次组卷
|
2卷引用:河南省郑州市宇华实验学校2023-2024学年高二下学期开学摸底考试数学试题
名校
解题方法
10 . 如图,在正方体
中,
,
,
分别是
,
的中点.用过点
且平行于平面
的平面去截正方体,得到的截面图形的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-19更新
|
971次组卷
|
4卷引用:河南省焦作市博爱县第一中学2024届高三下学期开学摸底考试数学试题
河南省焦作市博爱县第一中学2024届高三下学期开学摸底考试数学试题(已下线)广东省深圳中学2023-2024学年高三寒假开学适用性考试数学试题北京市东城区2024届高三上学期期末统一检测数学试题(已下线)专题07 立体几何表面积、体积、截面和点线面的8种常考题型归类(1) -《期末真题分类汇编》(北师大版(2019))