名校
解题方法
1 . 如图,在四棱锥P-ABCD中,底面ABCD为菱形且∠DAB=60°,O为AD中点.
(Ⅱ)若平面PAD⊥平面ABCD,且PA=PD=AD=2,试问在线段PC上是否存在点M,使二面角M-BO-C的大小为30°,如存在,求
的值,如不存在,说明理由.
(Ⅱ)若平面PAD⊥平面ABCD,且PA=PD=AD=2,试问在线段PC上是否存在点M,使二面角M-BO-C的大小为30°,如存在,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8660d53460ce277704667156122054f.png)
您最近一年使用:0次
2020-03-23更新
|
549次组卷
|
3卷引用:湖南省益阳市箴言中学2021-2022学年高二上学期10月月考数学试题
湖南省益阳市箴言中学2021-2022学年高二上学期10月月考数学试题贵州省铜仁第一中学2019-2020学年高二下学期开学考试数学(理)试题(已下线)模块二 专题3 利用空间向量解决立体几何中复杂问题 期末终极研习室(高二人教A版)
解题方法
2 . 如图所示,四棱锥
的底面为矩形,各棱及底边
,
的长均为
,
,
的长为
,过底面对角线
作与
平行的平面交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/8534dd93-ac47-434b-9cbf-8bb0efb51b04.png?resizew=163)
(1)求二面角
的余弦值;
(2)记
与
的交点为
,求
与底面
所成角的大小;
(3)求
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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827bec361fa9658bc190b57633f2b5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/8534dd93-ac47-434b-9cbf-8bb0efb51b04.png?resizew=163)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f4096ff62b4f29932cd8c6eef661a3.png)
(2)记
![](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://staticzujuan.xkw.com/quesimg/Upload/formula/f90c780dac29ff8b7df5881d3b33abab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
您最近一年使用:0次
2020-08-05更新
|
532次组卷
|
2卷引用:北师大版(2019) 选修第一册 必杀技 第三章 专题3 空间向量的综合应用
名校
3 . 已知正方体
的边长为2,Q为棱
的中点,M,N分别为线段
,
上两动点(包括端点),记直线
,
与平面
所成角分别为α,β,且
,则存在点M,N,使得( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/2d63339b-1429-4b0a-918a-c66415675237.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9bc8d856b022b55e1b7d0bfcd4069e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24963d5acbbdcd6e15c2db04002e0909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706e346adc5bd044a913e590790ca959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e802f4565660447fed165f09b9ee1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3016834592fbea599f933c825880fcb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/2d63339b-1429-4b0a-918a-c66415675237.png?resizew=167)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 如图,四棱锥P﹣ABCD的底面是正方形,PD⊥底面ABCD,PD=DC,E是PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/2a75a264-c5b4-41bc-8c90-ef07c37c6b9b.png?resizew=168)
(1)证明:平面PAB⊥平面PAD;
(2)求二面角P﹣AB﹣D的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/2a75a264-c5b4-41bc-8c90-ef07c37c6b9b.png?resizew=168)
(1)证明:平面PAB⊥平面PAD;
(2)求二面角P﹣AB﹣D的大小.
您最近一年使用:0次
2019-12-26更新
|
618次组卷
|
3卷引用:第3章 空间向量与立体几何(基础卷)-2020-2021学年高二数学课时同步练(苏教版选修2-1)
(已下线)第3章 空间向量与立体几何(基础卷)-2020-2021学年高二数学课时同步练(苏教版选修2-1)福建省南平市邵武市第四中学2019-2020学年高二上学期期中数学试题福建省泰宁第一中学2020-2021学年高二上学期学分认定暨第一次阶段考试数学试题
名校
5 . 已知在长方体ABCD﹣A1B1C1D1中,AD=AA1=1,AB=2,点E在棱AB上移动.
(Ⅰ)求证:D1E⊥A1D;
(Ⅱ)在棱AB上是否存在点E使得AD1与平面D1EC成的角为
?若存在,求出AE的长,若不存在,说明理由.
(Ⅰ)求证:D1E⊥A1D;
(Ⅱ)在棱AB上是否存在点E使得AD1与平面D1EC成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://img.xkw.com/dksih/QBM/2018/1/5/1854031733784576/1859021533405184/STEM/7de5d5f9a30441f2976cc23fb6b949b7.png?resizew=206)
您最近一年使用:0次
2018-01-12更新
|
839次组卷
|
3卷引用:江西省景德镇市第一中学2021-2022学年高二上学期期中数学(理)试题
2014·广东湛江·一模
名校
解题方法
6 . 在如图所示的几何体中,四边形
为平行四边形,
,
平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2014/4/28/1571681095139328/1571681100988416/STEM/d2fd3c26c0c84c68ab2b1ec536cbb2ac.png?resizew=217)
(1)若
是线段
的中点,求证:
平面
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41d3f7d55fcbaebc4e2450ac63a3dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c30de91ed42df92510cb64548fe704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05f315ab14567942f699983b60d04be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6034301fc4110da89bdb0f46ad82ab.png)
![](https://img.xkw.com/dksih/QBM/2014/4/28/1571681095139328/1571681100988416/STEM/d2fd3c26c0c84c68ab2b1ec536cbb2ac.png?resizew=217)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6895bdd0286b8e2704fee9c343d82f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9cd88984f891a49ab451a06410a1f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b820c84570da9c38d0a81c22788b76.png)
您最近一年使用:0次
2016-12-02更新
|
1477次组卷
|
3卷引用:甘肃省金昌市永昌县第一高级中学2020-2021学年高二上学期期末数学(理)试题
甘肃省金昌市永昌县第一高级中学2020-2021学年高二上学期期末数学(理)试题宁夏银川唐徕回民中学2019-2020学年高二12月数学(理)试题(已下线)2014届广东省湛江市高三高考模拟测试二理科数学试卷
名校
7 . 如图,多面体
中,
平面
,底面
是菱形,
,四边形
是正方形.
![](https://img.xkw.com/dksih/QBM/2016/7/1/1572867200106496/1572867205775360/STEM/b50731179665475facc5b965cb38d83a.png)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)在线段
上是否存在点
,使得
平面
,若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05638d82225327da27e5f916d2d4e747.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/68378516a5b898aec7fe5fc908fd9a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://img.xkw.com/dksih/QBM/2016/7/1/1572867200106496/1572867205775360/STEM/b50731179665475facc5b965cb38d83a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/021acdf01ccf88e6a35db6364d7b999d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f636f76d550dfb593a25eb680cff556.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e162da78f316b1f6214170122fdbdcd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34892d160c72edfc3d1e3f12adca89f.png)
您最近一年使用:0次
2016-12-04更新
|
1169次组卷
|
2卷引用:安徽省六安市第一中学2021-2022学年高二上学期开学考试数学试题
名校
8 . 如图,在四棱锥
中,侧面
底面
,底面
平行四边形,
,
,
,
为
的中点,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/8f076fdd-bdff-40df-a12e-325f688630ca.png?resizew=184)
(1)求证:
;
(2)试确定点
的位置,使得直线
与平面
所成的角和直线
与平面
所成的角相等.
![](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/c42ed2e5bd5a0f033e24008697bf4963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62526e69e7c4e59d9df8a5b2c2426400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692300f1ba0c83d7ffd4d0c6f36c9232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/8f076fdd-bdff-40df-a12e-325f688630ca.png?resizew=184)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf6c62979a7aa534a191d8387a741e8.png)
(2)试确定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2019-12-07更新
|
275次组卷
|
11卷引用:江苏省南京市二十九中2020-2021学年高二下学期期初数学试题
江苏省南京市二十九中2020-2021学年高二下学期期初数学试题福建省三明市2017届高三下学期普通高中毕业班5月质量检查理科数学试题福建泉州新世纪中学2017届高三普通高中毕业班质量检查数学(理)试题福建省三明市2017年普通高中毕业班5月质量检查理科数学试题四川省凉山州2018届高三毕业班第二次诊断性检测数学(理科)试题重庆市江津中学校2018届高三4月月考数学(理)试题【全国百强校】四川省双流县棠湖中学2019届高三上学期期末考试数学(理)试题四川省蓬溪县蓬南中学2022-2023学年高三上期第四次月考数学试题(已下线)专题8.7 立体几何中的向量方法(讲)【理】-《2020年高考一轮复习讲练测》重庆市2023届高三下学期第四次联考数学试题四川省泸州市合江县马街中学校2024届高三上学期期末数学(理)试题