1 . 如图1,四棱锥
中,
底面
,底面
是直角梯形,
,
,
,
,
,
,
为侧棱
上靠近点
的四等分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/0035cb0b-e0cd-4112-8aaa-b1f3f025fb76.png?resizew=141)
(1)证明:
平面
;
(2)求二面角
的平面角的余弦值.
![](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/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ff6d7dd48b57f03d82d2c522ee9b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fc6a5e71fa379d613ac1ef1cdf1048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/2023/2/2/0035cb0b-e0cd-4112-8aaa-b1f3f025fb76.png?resizew=141)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f33fa5152ba27f7b8a28890cefca219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
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2022-07-20更新
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1198次组卷
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5卷引用:海南省琼海市嘉积第二中学2021-2022学年高二下学期教学质量监测(期中)数学试题
海南省琼海市嘉积第二中学2021-2022学年高二下学期教学质量监测(期中)数学试题海南省乐东思源实验高级中学2022-2023学年高二上学期10月月考数学试题(已下线)突破1.4 空间向量的应用(重难点突破)(已下线)第10讲 第七章 立体几何与空间向量(综合测试)河南省郑州市中牟县2023-2024学年高二上学期期中数学试题
名校
解题方法
2 . 如图,在多面体ABCDEF中,
且
,
,四边形ABCD是平行四边形.
,
,点H为DE的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/1a4b490b-2da4-4bdb-bae9-b201c4d3562f.png?resizew=262)
(1)求证:
平面ABE;
(2)若点P是棱DE上一点,且
,求直线DE与平面BFP所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0532fccfa9bae5ed1b954b9f4a2c94d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df3f49493b1f7317cbe2e95e79338a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6615992e260ded5b9f9c26eb719386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b3df0b8d960ec6606bf04b78d279d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/1a4b490b-2da4-4bdb-bae9-b201c4d3562f.png?resizew=262)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaff36ea6b9ca1a4f345454e5541be58.png)
(2)若点P是棱DE上一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564d81d9b292cf840d0620676bcfff42.png)
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2022-07-09更新
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2卷引用:海南省2021-2022学年高二下学期学业水平诊断数学试题
3 . 如图所示,在正四棱锥P-ABCD中,点E、F,O分别是线段BC,PE,BD的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016653659914240/3018967435485184/STEM/70e6f9cac66f4fdaaee98664cb8bdc0b.png?resizew=191)
(1)求证:
平面PAD;
(2)若
,求二面角F-CD-E的正弦值.
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016653659914240/3018967435485184/STEM/70e6f9cac66f4fdaaee98664cb8bdc0b.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e447c70f2ad6d6a38afd6cad312007.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced3d3dd6af84fb052fc7281d707853e.png)
您最近一年使用:0次
2022-07-09更新
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653次组卷
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4卷引用:海南省2021-2022学年高一下学期学业水平诊断数学试题
海南省2021-2022学年高一下学期学业水平诊断数学试题江苏省镇江市句容碧桂园学校2022-2023学年高三上学期期初数学试题(已下线)微专题16 利用传统方法轻松搞定二面角问题(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
4 . 如图所示,在正四棱柱
中,点
,
,
分别为棱
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980758568148992/2981360767483904/STEM/34327162-05ad-4aa9-b18b-c391800d1bc0.png?resizew=184)
(1)证明:
平面
;
(2)若
,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980758568148992/2981360767483904/STEM/34327162-05ad-4aa9-b18b-c391800d1bc0.png?resizew=184)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdb8aebdfa202f12d8c43e42c06185b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
您最近一年使用:0次
5 . 如图,在正方体
中,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976275944808448/2977317381554176/STEM/5040b494f43d404b932517eac71ca3f3.png?resizew=189)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976275944808448/2977317381554176/STEM/5040b494f43d404b932517eac71ca3f3.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb689000fa7a3b425be3196d8b0f32af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f233b375753611ffa7a93c2c12ef5e28.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270a2ff49366962834dbec2d3bc2d9a7.png)
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2022-05-11更新
|
410次组卷
|
3卷引用:海南省海口嘉勋高级中学2022-2023学年高二上学期10月检测数学试题
6 . 如图所示的几何体由一个半圆锥和一个三棱锥组合而成,两个锥体的底面在同一平面内,BC是半圆锥底面的直径,D在底面半圆弧上,且
,△ABC是等边三角形.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967074017107968/2968139780636672/STEM/c697937a-3aea-4cca-a8ef-a7f82d0c5f46.png?resizew=155)
(1)证明:
平面SAC;
(2)若BC=2,
,求直线CD与平面SAB所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f2eac045b24557bcec085322c5a0c9.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967074017107968/2968139780636672/STEM/c697937a-3aea-4cca-a8ef-a7f82d0c5f46.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c44836da3b92c32f28a3065986a0cf8.png)
(2)若BC=2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978285f673cd222a5bc4d5be3b4f4785.png)
您最近一年使用:0次
名校
7 . 如图,在四棱锥
中,底面
是平行四边形,
平面
是棱
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
平面
;
(2)若
,且
为棱
上一点,
与平面
所成角的大小为
,求
的值.
![](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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d11e19c84255eb0431415c2dec553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f06a380f220c50b8b8100b8bb02dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb08a3eed3af2bdcb9d30e8b142de47f.png)
您最近一年使用:0次
2022-03-29更新
|
1688次组卷
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11卷引用:海南省琼海市嘉积中学2022届高三下学期四校联考数学试题
海南省琼海市嘉积中学2022届高三下学期四校联考数学试题天津市第四十七中学2022届高三下学期3月线上练习二数学试题陕西省部分地市学校2022届高三下学期高考全真模拟考试理科数学试题(已下线)必刷卷01 (理)-2022年高考数学考前信息必刷卷(全国乙卷)辽宁省重点高中沈阳市郊联体2022-2023学年高二上学期期中考试数学试题辽宁省沈阳市辽中区第二高级中学2022-2023学年高二上学期期中考试数学试题河南省濮阳市第一高级中学2022-2023学年高二下学期期中数学试题河南省信阳市固始县信合外国语高级中学2023-2024学年高二上学期期中数学试题(已下线)专题01 空间向量与立体几何(2)辽宁省沈阳市新民市第一高级中学2023-2024学年高二上学期10月月考数学试题福建省泉州市永春第一中学2023-2024学年高二下学期4月期中考试数学试题
名校
8 . 如图所示,在四棱锥
中,平面
平面
,底面
为矩形,
,
,
,点M在棱
上且
.
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930519802462208/2933762734424064/STEM/41c5e812-4f90-464f-89b5-d643371667d0.png?resizew=193)
(1)证明:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3912bd0b4aad85d86a46fb846cc04596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b416412f982d9c6956b2229d6e3729.png)
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930519802462208/2933762734424064/STEM/41c5e812-4f90-464f-89b5-d643371667d0.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2e778c348154f5b27aa6e074fe45d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2e778c348154f5b27aa6e074fe45d.png)
您最近一年使用:0次
2022-03-11更新
|
643次组卷
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4卷引用:海南省2022届高三下学期学业水平诊断(三)数学试题
名校
9 . 如图,在四棱锥P—ABCD中,PA⊥平面ABCD,四边形ABCD为梯形,BC
AD,AB⊥AD,E为侧棱PA上一点,且AE=2PE,AP=3,AB=BC=2,AD=4.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/4efa8e63-6b52-4c30-8418-9eeca7b54078.png?resizew=172)
(1)证明:PC
平面BDE;
(2)求平面PCD与平面BDE所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/4efa8e63-6b52-4c30-8418-9eeca7b54078.png?resizew=172)
(1)证明:PC
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)求平面PCD与平面BDE所成锐二面角的余弦值.
您最近一年使用:0次
2022-11-20更新
|
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11卷引用:海南省海口嘉勋高级中学2022-2023学年高二上学期11月期中检测数学试题
海南省海口嘉勋高级中学2022-2023学年高二上学期11月期中检测数学试题河南省洛阳市新安县第一高级中学2022-2023学年高三上学期入学测试理科数学(实验小班)试题江苏省常州市金沙高级中学2022-2023学年高三上学期12月阶段检测数学试题江苏省常州市金坛区金沙高级中学2022-2023学年高三上学期12月质量检测数学试题湖北省恩施州2019-2020学年高二下学期期末数学试题广东省河源市2019-2020学年高二下学期期末数学(理)试题河南省新乡市新乡县第一中学2019-2020学年高二下学期期末考试数学(理)试题贵州省黔南州2019—2020学年度高二下学期期末考试数学(理)试题湖南省六校2020-2021学年高三上学期联考(一)数学试题福建省南平市高级中学2020-2021学年高二上学期期中考试数学试题江苏省如东高级中学、丹阳高级中学、如皋中学2020-2021学年高三上学期12月三校联考数学试题
名校
10 . 如图,在直四棱柱
中,底面
是菱形,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/b4062ad5-fb5a-45b6-bbfe-beff89b5d55d.png?resizew=161)
(1)求证:
平面
;
(2)已知
,
,求直线
与平面
所成角的正弦值.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/b4062ad5-fb5a-45b6-bbfe-beff89b5d55d.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f11f1840eb8b17e7b07c3fe7e987a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a463a03c549b0dba6d90e7f16a2af.png)
(2)已知
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10卷引用:海南省琼海市嘉积中学2022届高三下学期第一次月考数学试题
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