解题方法
1 . 如图,在四棱锥
中,
平面
,底面
为菱形,
分别为
的中点.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
;
(2)若
,再从条件①、条件②这两个条件中选择一个作为已知.求二面角
的大小.
条件①:
;
条件②:
.
注:如果选择条件①和条件②分别解答,按第一个解答计分.
![](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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac4ee9a98647379757a6f643fb73438.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/e8b24db6-9aad-4943-8f98-126bdf572477.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442ddcea3d1c0c8536c091e0969eee60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b8df87ef099eae61bb07018f2ab335.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3672e603d06c9186edd20cfc662d8dc.png)
注:如果选择条件①和条件②分别解答,按第一个解答计分.
您最近一年使用:0次
名校
2 . 在图1所示的平面多边形中,四边形
为菱形,
与
均为等边三角形.分别将
沿着
,
翻折,使得
四点恰好重合于点
,得到四棱锥![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e52045125fa10787dcd577c38147bd.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/3e86ac98-85f0-4774-82e0-0339c4a48245.png?resizew=328)
(1)若
,证明:
;
(2)若二面角
的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d668c1a65824451fb5cb2908e4fc229f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b42d15b184904764e9a374554fc589c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06106b41c659977a527753f2736c9f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5262192e49cf903ee094457dbc250f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722932a41451ef41599d297bf10339c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e52045125fa10787dcd577c38147bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e23c8a2244688ed4c848bc4fb4ca576.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/3e86ac98-85f0-4774-82e0-0339c4a48245.png?resizew=328)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036de574712cad14bddadf6653c7e714.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daffe333e60992bb4590370b79b806d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2024-02-03更新
|
1117次组卷
|
5卷引用:湖北省十堰市2023-2024学年高二上学期期末调研考试数学试题
湖北省十堰市2023-2024学年高二上学期期末调研考试数学试题重庆市乌江新高考协作体2023-2024学年高二下学期开学学业质量联合调研抽测数学试题广东省2024届高三数学新改革适应性训练二(九省联考题型)(已下线)(新高考新结构)2024年高考数学模拟卷(二)(已下线)第三章 折叠、旋转与展开 专题一 平面图形的翻折、旋转 微点8 平面图形的翻折、旋转综合训练
解题方法
3 . 如图,在斜三棱柱
中,
是边长为
的正三角形,且四棱锥
的体积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/d9f45445-3405-403e-a7fe-88047dfb1ffe.png?resizew=157)
(1)求三棱柱
的高;
(2)若
,平面
平面
,
为锐角,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d0727de4c16b53b4bb6ab370afde6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/d9f45445-3405-403e-a7fe-88047dfb1ffe.png?resizew=157)
(1)求三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51f7ce48fc259dac927c95afe4ffbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee0aaf3928289d5cc7036c40784577a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06851d747f8ccf046bc807b2523e65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
您最近一年使用:0次
4 . 如图,在平行六面体
中,
,
,
,
,
,
,
与
相交于点
.
(1)求
;
(2)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c413174ea856822c5e23bd85eb4893e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe2ed70f81d66c750006e0292de8dcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdd421619a060fc8049b77f114554ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/15ef6de3-7249-4fd4-b960-4ed9b926be60.png?resizew=187)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bad16b7cdf8c638cd324f5be5d834f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc526324e78e4d9226d1b537f27845a.png)
您最近一年使用:0次
11-12高二上·河北承德·期末
名校
解题方法
5 . 已知正三棱柱ABC-A1B1C1中,底面边长,点O,O1分别是棱AC,A1C1的中点.建立如图所示的空间直角坐标系.
(1)求三棱柱的侧棱长;
(2)设M为BC1的中点,试用基向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d507cbc45fbda1630807543d4e038bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
(3)求异面直线AB1与BC所成角的余弦值.
您最近一年使用:0次
2024-01-31更新
|
79次组卷
|
8卷引用:2011年河北省承德市联校高二第一学期末理科数学卷
(已下线)2011年河北省承德市联校高二第一学期末理科数学卷(已下线)2011-2012学年重庆市万州二中高二上学期期中理科数学试卷辽宁省朝阳市建平县实验中学2023-2024学年高二上学期第一次月考数学试题(已下线)高二上学期第一次月考解答题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)福建省建瓯市芝华中学2023-2024学年高二上学期期中考试数学试题河南省驻马店市开发区高级中学2023-2024学年高二上学期第二次质量检测数学试题(已下线)1.3 空间向量及其运算的坐标表示【第一课】(已下线)3.3 空间向量的坐标表示(九大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
解题方法
6 . 如图,已知正方体
中,点
分别在棱
和
上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/c8f49327-5aa5-4de8-84cb-c78d85ce9fca.png?resizew=152)
(1)求平面
与平面
的夹角的余弦值;
(2)在线段
上是否存在点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
平面
?若存在,求
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f5f4ad0caac5a0fecb64f3908d2290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664f08e9d8c1aca672fbd42b07eb8423.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/c8f49327-5aa5-4de8-84cb-c78d85ce9fca.png?resizew=152)
(1)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4984ee07d47dbcc4705137cd6d931d8.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4984ee07d47dbcc4705137cd6d931d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b80585bcad5562380ecda31019e69c0.png)
您最近一年使用:0次
解题方法
7 . 如图,在直三棱柱
中,
,
,
,
分别为
,
的中点.
(1)求证:
平面
;
(2)求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdaa2495981cf1f87339efd7911f56f.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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/18edd3ff-5dc1-445a-af35-eb3f4edb8014.png?resizew=185)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd19c4db61254be8512edf741bf9f978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212a67f115d1cbe69f100b489babe5f8.png)
您最近一年使用:0次
解题方法
8 . 在棱长为1的正方体
中,
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/1e9ca2ab-8a46-4210-84f2-cf2d5699ba8a.png?resizew=177)
(1)求二面角
的大小;
(2)求点
到平面
的距离;
(3)若点G是棱
上一点,当G在何处时,
平面
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505f8477b4a74dbeedff2163fef376a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348b35cc1233c9f83b5e2204a6beec4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/1e9ca2ab-8a46-4210-84f2-cf2d5699ba8a.png?resizew=177)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7ddcf270cad9962145e0e75c8c7a57.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
(3)若点G是棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf65b8884909d735d575efe81a2d2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
您最近一年使用:0次
名校
解题方法
9 . 在圆锥
中,
是底面圆周上一点.设
的长为1,且圆锥的侧面展开图是半圆.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3959e348-a4df-47e9-aad2-dc0db2bfba0c.png?resizew=166)
(1)记圆锥的底面圆半径为
,母线长为
,则圆锥的侧面积
______(用
表示);在本题中,求圆锥的侧面积;
(2)求母线
与底面所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9654c9824b84dce1f840e3414c47ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3959e348-a4df-47e9-aad2-dc0db2bfba0c.png?resizew=166)
(1)记圆锥的底面圆半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0831c5d685f557969567fd7c696c1da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29373d30bb0bc626d1ffba6a845842ad.png)
(2)求母线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在四棱锥
中,
平面
,
,
为
中点,且
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/33275e30-5435-486d-bbdd-67b988a90feb.png?resizew=164)
(1)求二面角
的余弦值;
(2)若
在线段
上,直线
与平面
所成角的正弦值为
,求点
到平面
的距离.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/33275e30-5435-486d-bbdd-67b988a90feb.png?resizew=164)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e867e5c7ef4da37d8985ce82022060e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b045689b0f5e75ddc88774d02b4f734d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8948ac8156d19336083987d47b0f7038.png)
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