解题方法
1 . 如图,AB是圆O的直径,点C是圆O上的点,过点C的直线VC垂直于圆O所在平面,D,E分别是VA,VC的中点.求证:
(1)
平面
;
(2)
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/8/2cc34b78-d59d-4241-9da5-f8c12774b2f7.png?resizew=136)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af57d63e83ef0e183add10cd6beec65b.png)
您最近一年使用:0次
解题方法
2 . 如图,平面
与平面
交于
平面
,EF∥平面
,四边形
为正方形,且
.
∥平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c31baf57fd610e09609509ed6a1419d.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dbfc0c57ae26bea210c627073c46b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e0bd4b30dc777ac9da80f6baa3eb31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
您最近一年使用:0次
2023-07-07更新
|
237次组卷
|
2卷引用:河北省衡水市部分示范性高中2023-2024学年高一下学期5月期中考试数学试题
3 . 在三棱台
中,
为等边三角形,
,
平面
,
分别为
,
的中点,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/7dffb745-2037-42ce-bbd9-a9f7eba59151.png?resizew=193)
(1)证明:平面
平面
;
(2)若
,设
为线段
上的动点,求
与平面
所成的角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a61472439de1ba85cfe33840b775f2.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/7dffb745-2037-42ce-bbd9-a9f7eba59151.png?resizew=193)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca81233fe44d2853df1a484580b6008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88e7df45acca3fc3d3da3370f0c32bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
2024-03-24更新
|
986次组卷
|
2卷引用:河北省金科大联考2024届高三下学期3月质量检测数学试题
2011·河北唐山·一模
名校
4 . 如图,在四棱锥
中,
平面
,
,
,且
,
,
.
;
(2)在线段
上,是否存在一点M,使得二面角
的大小为
,如果存在,求
与平面
所成角的正弦值,如果不存在,请说明理由.
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2478a116f8ff83c8477094e97c4211cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d768ffd5bf75080e8ff5ce6b472c0cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698335f4880c7a298f4898c83b6562bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5bb4978fdc23a8220f68fe41d28829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
您最近一年使用:0次
2023-09-06更新
|
1147次组卷
|
23卷引用:2011届河北省唐山一中高三高考仿真理数
(已下线)2011届河北省唐山一中高三高考仿真理数2017届湖南五市十校高三理12月联考数学试卷2018年高考数学(理科,通用版)练酷专题二轮复习课时跟踪检测:(十九) 立体几何河南省南阳市第一中学2018届高三第十四次考试数学(理)试题内蒙古赤峰市2018-2019学年高二下学期期末联考数学(理)试题广东省华南师范大学附属中学2018-2019学年上学期高二年级期末数学试题宁夏六盘山高级中学2020届高三第四次模拟测试数学(理)试题(已下线)专题04 立体几何——2020年高考真题和模拟题理科数学分项汇编人教A版(2019) 选择性必修第一册 过关斩将 第一章 空间向量与立体几何 1.4 空间向量的应用 1.4.2 用空间向量研究距离、夹角问题安徽省池州市第一中学2020-2021学年高二上学期12月月考数学(理)试题江西省吉水中学2020-2021学年高二11月月考数学(理)试题甘肃省民乐县第一中学2021届高三押题卷(二)数学(理)试题(已下线)课时1.4.2 空间向量的应用(02)用空间向量研究距离、夹角问题-2021-2022学年高二数学同步练习和分类专题教案(人教A版2019选择性必修第一册)(已下线)考点52 空间向量在立体几何中的运用-备战2022年高考数学一轮复习考点帮(新高考地区专用)【学科网名师堂】山东省淄博市高青县第一中学2021-2022学年高二上学期10月月考数学试题安徽省六安市舒城中学2022-2023学年高二上学期开学考试数学试题沪教版(2020) 选修第一册 精准辅导 第3章 3.4(4)求角的大小(第2课时)四川省遂宁中学校2022-2023学年高二上学期10月月考数学(理)试题辽宁省大连市第八中学2021-2022学年高二上学期10月阶段考试数学试题安徽省宣城中学2023-2024学年高二上学期第一次(10月)月考数学试题(已下线)特训02 期末解答题汇编(第1-5章,精选38道)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)安徽省合肥市第九中学2023-2024学年高二上学期第一次单元质量检测数学试题(已下线)核心考点8 立体几何中综合问题 B提升卷 (高一期末考试必考的10大核心考点)
名校
5 . 如图直角梯形
中,
为
中点.以
为折痕把
折起,使点
到达点
的位置,且
.
平面
;
(2)二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3900a02ed58b0cb16efb6859d1c84a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1720da6d65e7fa854d98322d3864240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
(2)二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35471e5a1da79efc952ff6aa905616f3.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,正三棱柱
中,
,
,点
为
的中点.
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/ae0a96c2-5be7-413b-b10e-c753f75f4eac.png?resizew=178)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cc24037ff3b29f2cb81291734869d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c868ec5de0af022feee3eeb98e2c30ae.png)
您最近一年使用:0次
2023-06-17更新
|
1086次组卷
|
2卷引用:河北省衡水市饶阳中学2022-2023学年高一下学期期末数学试题
名校
解题方法
7 . 已知四棱台
中,底面
为正方形,
,
,
,
⊥底面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/a8661119-3ec1-4e05-a917-0487b68452e6.png?resizew=152)
(1)证明:
.
(2)求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0424446817f60c18f8e4e3cc202ad99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03bd2909f55de23a5a91034ee08adcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50943279ee6f0299b3725eecd77bafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/a8661119-3ec1-4e05-a917-0487b68452e6.png?resizew=152)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1de5964353beb55c5058b2a431eecaf.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
8 . 如图,在四棱锥
中,
平面
是等边三角形,
.
(1)求证:平面
平面
;
(2)求平面
与平面
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/29a122faf99854b5d548d9bee12bd0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7b6d04f024ca05cdfacc8ce9137c15.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/23/2aff95d8-e331-4ec3-a35c-661afb0fe250.png?resizew=159)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2023-08-23更新
|
884次组卷
|
2卷引用:河北省邯郸市武安市第三中学2023-2024学年高二上学期开学考试数学试题
9 . 在如图所示的三棱锥
中,
分别是线段
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/ddb31d53-420c-421d-ad70-a7d3e7e889dd.png?resizew=134)
(1)证明:直线
平面
;
(2)若二面角
的大小为
,求直线
和平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c6594ed1b0efc0415e8d64bbe8fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a77aa6c27acfffcc601d9ca7e6d4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f8c4ef0aee67b54282d9a6fa7714ea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/ddb31d53-420c-421d-ad70-a7d3e7e889dd.png?resizew=134)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d3f5f4c4419913c1232b7aae03ade.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107b87854ea594f77a40b25becd36020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
您最近一年使用:0次
名校
10 . 如图,在四棱锥中,四边形
是边长为2的正方形,
与
交于点
,
面
,且
.
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2023-06-09更新
|
2670次组卷
|
7卷引用:河北省秦皇岛市昌黎文汇学校2022-2023学年高一下学期期末数学试题
河北省秦皇岛市昌黎文汇学校2022-2023学年高一下学期期末数学试题2023年湖南省邵阳市隆回县高中学业水平考试模拟数学试题(已下线)第04讲 利用几何法解决空间角和距离19种常见考法归类(6)黑龙江省牡丹江市第一高级中学2022-2023学年高一下学期期末考试数学试题新疆维吾尔自治区乌鲁木齐市五校2022-2023学年高一下学期6月期末联考数学试题(已下线)重难点突破02 利用传统方法求线线角、线面角、二面角与距离(四大题型)(已下线)第八章 立体几何初步(二)(知识归纳+题型突破)(2)-单元速记·巧练(人教A版2019必修第二册)