名校
解题方法
1 . 在如图所示的五面体
中,面
是边长为2的正方形,
面
,
,且
为
的中点,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/6035f2b1-63fa-4845-ad4f-fc0940404487.png?resizew=163)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
平面
;
(2)求平面NMF与平面DMF所成角的余弦值;
(3)求点
到平面
的距离.
![](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/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f0a3bee8c6f293df9b3b2a11818f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b1ef3acf7e2029fb58359699335135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/6035f2b1-63fa-4845-ad4f-fc0940404487.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面NMF与平面DMF所成角的余弦值;
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8be7470f11eed5536f3baf65e3a125d.png)
您最近一年使用:0次
解题方法
2 . 如图,正方体
棱长为2,
分别为
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/0b938996-e896-45a1-bfd4-419f22ae5b9c.png?resizew=176)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
平面
;
(2)求
与平面
所成角的大小;
(3)求点M到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/0b938996-e896-45a1-bfd4-419f22ae5b9c.png?resizew=176)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
(3)求点M到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在四棱锥
中,
平面
,
,底面ABCD是边长为4的菱形,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/795f868f-ed75-4857-8a92-b366d4066bc5.png?resizew=143)
(1)求证:
;
(2)求平面PAC与平面PCD夹角的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/795f868f-ed75-4857-8a92-b366d4066bc5.png?resizew=143)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5d56d8170b764b80a672cd6c861921.png)
(2)求平面PAC与平面PCD夹角的余弦值.
您最近一年使用:0次
2023-01-13更新
|
201次组卷
|
2卷引用:河南省潢川第一中学2022-2023学年高二上学期期末考试数学理科试题
名校
解题方法
4 . 如图,在长方体
中,
,
,
,
,
,则异面直线
与CF所成的角为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/28/4eb0bb10-7f0d-43ae-86f9-0548e2dd242c.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49437f474e5805688dff21ded2d1fd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50943279ee6f0299b3725eecd77bafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12529faf907a1c374d723c836e699c8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11917085059a83ae9771e6712a2a1cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e516121599c9fcc528121c00afcf52fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/28/4eb0bb10-7f0d-43ae-86f9-0548e2dd242c.png?resizew=139)
A.30° | B.45° | C.60° | D.90° |
您最近一年使用:0次
20-21高二下·浙江·期末
名校
5 . 如图,在四棱锥
中,
底面
,底面
为梯形,
,
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466e7413915cb9c5291449a45db78de6.png)
为
上一点,且
,证明:
平面
;
(2)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/c45fbffb9e2c7fa7c5006cde8da0cabe.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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec1483fa0cf98ed00ce29b2aefbdc00a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466e7413915cb9c5291449a45db78de6.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/db8a5fc1d31b0f1a85e09336494c2e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94270844f197d524bf1da4f1385befd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4d775e9fb8bca58a25e75d5b21b05f.png)
您最近一年使用:0次
2023-01-10更新
|
660次组卷
|
13卷引用:河南省开封市通许县启智高中2022-2023学年高二上学期第一次月考数学试题
河南省开封市通许县启智高中2022-2023学年高二上学期第一次月考数学试题河南省商丘名校联盟2022-2023学年高二上学期期中联考数学试题河南省豫南六校2022-2023学年高二上学期期中联考数学试题广东省揭阳市榕城区仙桥中学2021-2022学年高二下学期期中数学试题黑龙江省哈尔滨市宾县第二中学2022-2023学年高二上学期第一次月考数学试题浙江省金华市2022-2023学年高二上学期期末数学试题(已下线)【新东方】高中数学20210527-003【2021】【高二下】(已下线)【新东方】高中数学20210527-004【2021】【高二下】浙江省杭州市高级中学2020-2021学年高二下学期期中数学试题(已下线)第1章 空间向量与立体几何 章末测试(提升)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)(已下线)第九章 立体几何专练11—线面角大题1-2022届高三数学一轮复习(已下线)1.4空间向量的应用-【优质课堂】2021-2022学年高二数学同步课时优练测(人教A版2019选择性必修第一册)云南省昆明市第一中学2023-2024学年高二下学期4月期中考试数学试题
名校
6 . 如图所示,在三棱柱
中,
是等边三角形,
平面
,
,
,
,
分别是
,
,
的中点,则直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/97971c26-def6-42af-85b1-6ba03d54046a.png?resizew=140)
![](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/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/97971c26-def6-42af-85b1-6ba03d54046a.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.0 |
您最近一年使用:0次
2023-01-04更新
|
369次组卷
|
4卷引用:河南省信阳高级中学2022-2023学年高二上学期10月巩固测试数学试题
7 . 如图所示,在四棱锥
中,
底面
,底面
是菱形,且
,
,
是
的中点,
是棱
上靠近点
的一个三等分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/5d86d141-67c4-4296-b7c4-0a32bf6aa141.png?resizew=126)
(1)证明:
平面
;
(2)求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a4950a6e4202efd609507964af238b.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/5d86d141-67c4-4296-b7c4-0a32bf6aa141.png?resizew=126)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a681d311a864d38cf306a0c137cbcca.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e45050779cce642cf41c57de96ba12.png)
您最近一年使用:0次
2022-12-29更新
|
276次组卷
|
2卷引用:河南省南阳市第八中学校2022-2023学年高二上学期期末质量评估数学试题
8 . 如图,四棱锥
中,
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/2022/12/19/3134141471793152/3135571658416128/STEM/a7dbec421af34244b69cc2f68b090e1e.png?resizew=222)
(1)求证:直线
平面
;
(2)若直线
与平面
所成的角为
,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74f1828d17c2059a2966fe960757541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50787ea6e991852b1070e8e1c930df7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d9ef979b9f27a28cbda6923e888ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a405b8ed5ac9fb2edc41228bbf5347b4.png)
![](https://img.xkw.com/dksih/QBM/2022/12/19/3134141471793152/3135571658416128/STEM/a7dbec421af34244b69cc2f68b090e1e.png?resizew=222)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e4f7bbff499143cef82c65d2b20a27.png)
您最近一年使用:0次
2022-12-21更新
|
244次组卷
|
2卷引用:河南省南阳市六校2022-2023学年高二上学期第二次联考数学试题(B卷 )
名校
9 . 如图,在正四棱锥
中,O为底面中心,
,
,M为PO的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/d256fc2b-4d83-42d5-8ea4-11f8db8d066b.png?resizew=217)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
平面EAC;
(2)求:(i)直线DM到平面EAC的距离;
(ii)求直线MA与平面EAC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6834ac70927ae08d7d36a1922403c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764829cc2c763b6aca0665aa143e304e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a792913ec98992fc7feb7ea63aa38b0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/d256fc2b-4d83-42d5-8ea4-11f8db8d066b.png?resizew=217)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)求:(i)直线DM到平面EAC的距离;
(ii)求直线MA与平面EAC所成角的正弦值.
您最近一年使用:0次
2022-12-21更新
|
452次组卷
|
3卷引用:河南省南阳市六校2022-2023学年高二上学期第二次联考数学试题(B卷 )
解题方法
10 . 如图,已知平面四边形
中,
,
,
,
.沿直线
将
翻折成
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/d9b1b36c-b00d-46d5-8fb9-3f0f0b8ea569.png?resizew=158)
(1)求
的值;
(2)当平面
平面
时,求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa1c07becd03537beeb09a31745cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e530783dc49238736ed5c1157e6184dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f63756fe9251e65cc14e1ce9723d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe63cdbe51e72467e78e6458d4152b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/d9b1b36c-b00d-46d5-8fb9-3f0f0b8ea569.png?resizew=158)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b3dff6522c24a955ea87891d2a7b25.png)
(2)当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb3c5eea67eecdd13a2e6cd60d1d67e.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/32b435d7fc33860ae191f9111d880b40.png)
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