1 . 如图,已知四棱锥
平面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e0d0d5b6512c8299e5b30dd9af6c5.png)
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5871f03ab98cfbd037ef45bb9e390174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa003ffef67888a7821243f1f93f1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e0d0d5b6512c8299e5b30dd9af6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
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名校
2 . 《九章算术》中,将四个面都为直角三角形的四面体称为鳖臑.如图,已知PA⊥平面ABC,平面PAB⊥平面PBC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/38d44498-03e0-428d-b0b4-75a07f5649e9.png?resizew=144)
(1)判断四面体P-ABC是否为鳖臑,并给出证明;
(2)若二面角B-AP-C与二面角A-BC-P的大小都是
,求AC与平面BCP所成角的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/38d44498-03e0-428d-b0b4-75a07f5649e9.png?resizew=144)
(1)判断四面体P-ABC是否为鳖臑,并给出证明;
(2)若二面角B-AP-C与二面角A-BC-P的大小都是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
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2022-07-02更新
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1149次组卷
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2卷引用:河南省开封市2021-2022学年高一下学期期末数学试题
3 . 如图,在四棱锥
中,底面ABCD为矩形,
,点E为线段PC的中点,且
.
;
(2)求直线PB与平面ADE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316685631676ce839da7ced55501b2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
(2)求直线PB与平面ADE所成角的正弦值.
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2022-06-25更新
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749次组卷
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2卷引用:江苏省盐城市2021-2022学年高二下学期期末数学试题
名校
4 . 如图,在三棱锥
中,
底面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/6c27cf44-4bf4-4a15-acea-dfe23eedfdf1.png?resizew=161)
(1)证明:平面
平面
;
(2)若
,直线
与平面
所成角的大小为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42deb6707a04e7810c10a8370f2422d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/6c27cf44-4bf4-4a15-acea-dfe23eedfdf1.png?resizew=161)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6e6192cf24ada791c26c2d6d434069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
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2022-06-23更新
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1103次组卷
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2卷引用:浙江省宁波市2021-2022学年高二下学期期末数学试题
名校
解题方法
5 . 如图,已知
是底面为正方形的长方体,
,
,点
是
上的动点.
为
的中点时,求异面直线
与
所成的角的余弦值;
(2)求
与平面
所成角的正切值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c83f15fe532ff5e4a55ac07af4b7b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d125488e31956301c61d1ea1136f752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655c413f509068d30b165f9d92bdba0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24006d28116bc097933cc90bcc0ea69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ec06f50894c259172c934481b196b2.png)
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2022-05-25更新
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1007次组卷
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4卷引用:湖南师范大学附属中学2021-2022学年高一下学期第二次月考数学试题
名校
6 . 已知四棱锥
满足:四边形ABCD为正方形,△PAD为等边三角形,且平面PAD⊥平面ABCD,
,E为PA的中点.
平面BDE;
(2)求直线PC和平面ABCD所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2597b5554284e275367c25529c6750f.png)
(2)求直线PC和平面ABCD所成角的正切值.
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2022-05-24更新
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2095次组卷
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5卷引用:重庆市第一中学校2021-2022学年高一下学期期中数学试题
名校
7 . 如图,
垂直于⊙
所在的平面,
为⊙
的直径,
,
,
,
,点
为线段
上一动点.
(1)证明:平面AEF⊥平面PBC;
(2)当点F与C点重合,求 PB与平面AEF所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc17568125c6449fb22759bac6d95c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfbaf73297240eb116f22489519895a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/553b2bdb-f97b-47d8-af20-3e986aaf131a.png?resizew=160)
(1)证明:平面AEF⊥平面PBC;
(2)当点F与C点重合,求 PB与平面AEF所成角的正弦值.
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2022-09-15更新
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1826次组卷
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10卷引用:广东省广州市白云区、海珠区2020-2021学年高一下学期期末数学试题
广东省广州市白云区、海珠区2020-2021学年高一下学期期末数学试题(已下线)8.6 空间直线、平面的垂直(精练)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)广东省韶关市曲江区曲江中学2021-2022学年高一下学期期末复习1数学试题浙江省宁波市咸祥中学2021-2022学年高一下学期期末数学试题(已下线)第04讲 空间直线、平面的垂直 (高频考点—精讲)-2(已下线)第八章 立体几何初步 (单元测)(已下线)微专题15 轻松搞定线面角问题(已下线)高一下学期期末数学考试模拟卷03-期中期末考点大串讲(已下线)期末专题09 立体几何大题综合-【备战期末必刷真题】(已下线)期末专题05 立体几何大题综合-【备战期末必刷真题】
8 . 如图,在四面体ABCD中,
,
,M是棱AD的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963550293278720/2965867278622720/STEM/ba51e16c-3524-4df5-8e2c-37d8da28260a.png?resizew=175)
(1)求四面体ABCD的表面积和体积;
(2)求直线CM与底面BCD所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad8bfb2f5d95ff00cc4ef8b7eb78883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963550293278720/2965867278622720/STEM/ba51e16c-3524-4df5-8e2c-37d8da28260a.png?resizew=175)
(1)求四面体ABCD的表面积和体积;
(2)求直线CM与底面BCD所成的角的正弦值.
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解题方法
9 . 如图,在三棱锥
中,
.
![](https://img.xkw.com/dksih/QBM/2022/4/1/2948538773184512/2949805322330112/STEM/97a896bc147f4a85a0f2aed1d9a71488.png?resizew=181)
(1)证明:平面
平面
;
(2)若二面角
的大小为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae92a217d9bfd4b602648b63f992c1d.png)
![](https://img.xkw.com/dksih/QBM/2022/4/1/2948538773184512/2949805322330112/STEM/97a896bc147f4a85a0f2aed1d9a71488.png?resizew=181)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ca12f11f39405a6a49042c5e294862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae53523c9db0a68cd9e63ed84512056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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2022-04-03更新
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1732次组卷
|
3卷引用:重庆市2022届高三高考模拟调研(四)数学试题
解题方法
10 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,
,E为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/9/2867954640388096/2891433299984384/STEM/e7233ea6da42477cbdeb50549bd96332.png?resizew=205)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
平面
.
(2)若平面
平面
,求直线m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/342d452a7b850cd3a15b23619ad39bd7.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/6169cacf6c961ec78ccbd60db2726778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bc77b37986d658edad69992c5ea0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb781c6d8987f9968de835eb5853c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5583cca0f4a347163c506aa271c9f721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2022/1/9/2867954640388096/2891433299984384/STEM/e7233ea6da42477cbdeb50549bd96332.png?resizew=205)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a09d03d26008b17d89e98125eff110c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89263b8efd91e2fae604f862f035dd5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
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