名校
1 . 如图,在直三棱柱
中,
,
,
,
,E、F分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971571202973696/2972784106258432/STEM/6bc70e90-d9d4-4cfa-898a-389b0f249d38.png?resizew=180)
(1)求证:
平面
;
(2)求直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267880e605306851d8f46be77b11f9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6623de5abdeae42cb02348563ff103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971571202973696/2972784106258432/STEM/6bc70e90-d9d4-4cfa-898a-389b0f249d38.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
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2 . 如图,在多面体ABCDEF中,四边形ACDE是正方形,DF//BC,AB⊥AC,AE⊥平面ABC,AB=AC=2,EF=DF=
.
![](https://img.xkw.com/dksih/QBM/2022/2/28/2926244105977856/2929928890179584/STEM/a786b5c568ec4c3897bcaba37cad87c8.png?resizew=186)
(1)求证:平面BCDF⊥平面BEF;
(2)求二面角A-BF-E的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2022/2/28/2926244105977856/2929928890179584/STEM/a786b5c568ec4c3897bcaba37cad87c8.png?resizew=186)
(1)求证:平面BCDF⊥平面BEF;
(2)求二面角A-BF-E的余弦值.
您最近一年使用:0次
2022-03-05更新
|
1254次组卷
|
5卷引用:江苏省南京市第一中学江北校区2024届高三上学期一模数学练习试题
名校
3 . 如图1所示,梯形ABCD中,AB=BC=CD=2,AD=4,E为AD的中点,连结BE,AC交于F,将△ABE沿BE折叠,使得平面ABE⊥平面BCDE(如图2).
(1)求证:AF⊥CD;
(2)求平面AFC与平面ADE的夹角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/8/5547d2d1-460d-47c5-a69e-c6ed027c8a93.png?resizew=317)
(1)求证:AF⊥CD;
(2)求平面AFC与平面ADE的夹角的余弦值.
您最近一年使用:0次
2022-04-24更新
|
1878次组卷
|
6卷引用:江苏省南京市第一中学2022-2023学年高三上学期8月质量检测数学试题
江苏省南京市第一中学2022-2023学年高三上学期8月质量检测数学试题广东省惠州市2022届高三下学期一模数学试题广东省佛山市南海区桂华中学2022届高三下学期第三次大测数学试题(已下线)第09讲 立体几何与空间向量 章节总结 (讲)-2四川省仁寿第一中学校南校区2023-2024学年高三上学期第一次调研考试理科数学试题(已下线)考点15 立体几何中的折叠问题 2024届高考数学考点总动员【练】
名校
4 . 如图,在四棱锥V-ABCD中,底面ABCD为矩形,
,E为CD的中点,且△VBC为等边三角形.
![](https://img.xkw.com/dksih/QBM/2022/3/8/2931964685918208/2934912639098880/STEM/18412832-9224-4ed2-b344-82187cdf052f.png?resizew=207)
(1)若VB⊥AE,求证:AE⊥VE;
(2)若二面角A-BC-V的大小为
,求直线AV与平面VCD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0041488020a3e19377b18a70fbf82e7c.png)
![](https://img.xkw.com/dksih/QBM/2022/3/8/2931964685918208/2934912639098880/STEM/18412832-9224-4ed2-b344-82187cdf052f.png?resizew=207)
(1)若VB⊥AE,求证:AE⊥VE;
(2)若二面角A-BC-V的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
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2022-03-12更新
|
3961次组卷
|
7卷引用:江苏省盐城市阜宁县东沟中学2022届高三下学期第一次综合训练数学试题
解题方法
5 . 如图,在四棱锥
中,底面
为直角梯形,
,
,平面
底面
,
为
的中点,
是棱
的中点,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/6/26/2751537936941056/2781247418793984/STEM/452d60cd-5be7-4d60-b17c-cb753eb483c9.png?resizew=243)
(1)若平面
与平面
的交线为
,求证:
;
(2)求直线
与平面
所成角的正切值;
(3)求直线
与
所成角的余弦值.
![](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/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8254b52b379a420c17d38334940b073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5729dd997ea7e8cb4cef8b7165b36e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18120a244d3a1f9c1688bf53eb2ad775.png)
![](https://img.xkw.com/dksih/QBM/2021/6/26/2751537936941056/2781247418793984/STEM/452d60cd-5be7-4d60-b17c-cb753eb483c9.png?resizew=243)
(1)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbf6462666c8015e7de28e344af30b2.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
6 . 如图,在三棱柱ABC
A1B1C1中,侧棱AA1⊥底面ABC,AB⊥BC,D为AC的中点,AA1=AB=2,BC=2
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/1e2961b7-81a5-4893-8e6f-11ab1e4a68f5.png?resizew=162)
(1)求AB1与BD所成角的余弦值;
(2)求证:B1C⊥C1D.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/1e2961b7-81a5-4893-8e6f-11ab1e4a68f5.png?resizew=162)
(1)求AB1与BD所成角的余弦值;
(2)求证:B1C⊥C1D.
您最近一年使用:0次
7 . 如图,已知斜三棱柱
,
,
,
的中点为
.且
面
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/18/2728815858655232/2738387795877888/STEM/30219949-4660-4bf0-8146-2d2cd63ac49f.png?resizew=253)
(1)求证:
;
(2)在线段
上找一点
,使得直线
与平面
所成角的正弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3cc9cccfb4c260dac05f4ed57e8c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890e58791814622b87c4d60ea971f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988ac0247c60cbb622f2330276c6190d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/18/2728815858655232/2738387795877888/STEM/30219949-4660-4bf0-8146-2d2cd63ac49f.png?resizew=253)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88e7df45acca3fc3d3da3370f0c32bc.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1369f53ea899e522cd567138d7e667bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258c52377de8dbfb3d96fdd86f692a1d.png)
您最近一年使用:0次
2021-06-08更新
|
1739次组卷
|
5卷引用:江苏省南京师范大学《数学之友》2021届高三下学期二模数学试题
江苏省南京师范大学《数学之友》2021届高三下学期二模数学试题安徽省六安市第一中学2020-2021学年高一下学期期末数学试题(已下线)第20题 立体几何解答题的两大主题:线面位置的证明及空间角-2021年高考数学真题逐题揭秘与以例及类(新高考全国Ⅰ卷)(已下线)1.4 空间向量的应用(精练)-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)专题03 直线与平面所成角(含探索性问题)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)
名校
解题方法
8 . 如图,在棱长为4的正方体ABCD-A1B1C1D1中,设E是CC1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a4b84778-a3bb-4d10-9884-88d876d8c8b5.png?resizew=211)
(1)求证:BD1⊥AC;
(2)求证:AC∥平面BD1E;
(3)求三棱锥E-BCD1的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a4b84778-a3bb-4d10-9884-88d876d8c8b5.png?resizew=211)
(1)求证:BD1⊥AC;
(2)求证:AC∥平面BD1E;
(3)求三棱锥E-BCD1的体积.
您最近一年使用:0次
名校
解题方法
9 . 如图,在三棱锥
中,
,
,平面
平面
,点
、
(
与
、
不重合)分别在棱
,
上,且
平面
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/c27af095-1f74-4fa1-b115-dd0bdbf81b32.png?resizew=185)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d28cb7181257cf732af4b615fc47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/c27af095-1f74-4fa1-b115-dd0bdbf81b32.png?resizew=185)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1a1fd2fc33e89f357cef772ff6cd0e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35333abd7f02d663d15251bc5cbbf921.png)
您最近一年使用:0次
10 . 如下图,在四棱锥
中,底面
是正方形,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/8006d3ac-6e7a-4b3b-933b-1d6da0038a8d.png?resizew=151)
(1)求
与
所成角的余弦值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877582b5387278008d14fe5932622fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac14dc6acbe6fd959ea52a3ad489879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/8006d3ac-6e7a-4b3b-933b-1d6da0038a8d.png?resizew=151)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2389ee25be6516208b783405add175d.png)
您最近一年使用:0次
2021-09-15更新
|
4042次组卷
|
13卷引用:第02讲 玩转立体几何中的角度、体积、距离问题-【暑假自学课】2022年新高二数学暑假精品课(苏教版2019选择性必修第一册)
(已下线)第02讲 玩转立体几何中的角度、体积、距离问题-【暑假自学课】2022年新高二数学暑假精品课(苏教版2019选择性必修第一册)2015年山东省春季高考数学真题(已下线)考向34 空间中的垂直关系(已下线)考向23 点、直线、平面之间的位置关系-备战2022年高考数学一轮复习考点微专题(上海专用)江西省遂川中学2021-2022学年高二上学期第二次月考数学(文)试题(A卷)北京师范大学附属实验中学2021-2022学年高二年级12月月考数学试题(已下线)专题10 立体几何线面位置关系及空间角的计算(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(浙江专用)》(已下线)专题10 立体几何线面位置关系及空间角的计算(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》(已下线)第11讲 直线与平面、平面与平面的位置关系-【寒假自学课】2022年高一数学寒假精品课(苏教版2019必修第二册)(已下线)专题20 立体几何综合大题必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)查补易混易错点05 空间向量与立体几何-【查漏补缺】2022年高考数学三轮冲刺过关(新高考专用)(已下线)第八章立体几何初步知识-2(已下线)6.5.2平面与平面垂直(课件+练习)