名校
1 . 如图所示等腰梯形ABCD中,
,
,
,点E为CD的中点,沿AE将△DAE折起,使得点D到达F位置.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/96529d3a-60d0-44a3-88e8-48672a4363ce.png?resizew=222)
(1)当
时,求证:
平面AFC;
(2)当
时,求二面角B-EF-C的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21da760ad4567cbf991f70dca72f60d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/96529d3a-60d0-44a3-88e8-48672a4363ce.png?resizew=222)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2f0d6b7c46fd8152fc6f7bfc70ae54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246403a89c5e6795ef2ac6eb19928ced.png)
您最近一年使用:0次
2022-03-02更新
|
256次组卷
|
2卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三下学期2月月考数学试题
名校
解题方法
2 . 已知等边
的边长为4,
是
边上的高,E,F分别是
和
边的中点,现将
沿
翻折成直二面角
.
![](https://img.xkw.com/dksih/QBM/2022/4/2/2949482463895552/2955229042335744/STEM/ef6ee14c-7efe-4c71-a75c-8f52b0f1e595.png?resizew=325)
(1)求直线
与平面
的夹角的正弦值;
(2)在线段
上是否存在一点
,使
?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6dfb039aafe2d2841f8c28b117cf741.png)
![](https://img.xkw.com/dksih/QBM/2022/4/2/2949482463895552/2955229042335744/STEM/ef6ee14c-7efe-4c71-a75c-8f52b0f1e595.png?resizew=325)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e32cf73c01995c91c3523fa11b3bd7d.png)
您最近一年使用:0次
名校
3 . 如图,在四棱锥
中,平面
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/e17d9f5d-b9de-4052-a288-c1ec4859c9df.png?resizew=201)
(1)求证:
平面
;
(2)若直线
与底面
所成的角的正切值为
,求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5799e67a7f6ef3e0e1ec46aa0ee4c0c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7856b06682c9058d76120982fdbc91c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/e17d9f5d-b9de-4052-a288-c1ec4859c9df.png?resizew=201)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290a37874cd284fb1a8c864769ce50c9.png)
您最近一年使用:0次
2022-02-08更新
|
474次组卷
|
8卷引用:新疆维吾尔自治区伊宁市第三中学2024届高三下学期3月月考数学试题
新疆维吾尔自治区伊宁市第三中学2024届高三下学期3月月考数学试题湖北省郧阳中学,恩施高中,随州二中,襄阳三中,十堰一中2021届高三下学期4月联考数学试题(已下线)专题2.7 空间向量与立体几何-2021年高考数学解答题挑战满分专项训练(新高考地区专用)湖南省长沙市长郡中学2021-2022学年高二上学期期中数学试题安徽省亳州市第一中学2021-2022学年高二上学期11月教学检测数学试题辽宁省葫芦岛市四校2022-2023学年高二上学期期中联考数学试题福建省泉州市泉港区第一中学、厦门外国语学校石狮分校2023-2024学年高二上学期期中联考数学试题湖南省长沙外国语学校2023-2024学年高二下学期3月月考数学试题
名校
解题方法
4 . 如图,在多面体
中,
为正方形,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894203289747456/2895176848891904/STEM/54939ee7-0352-4531-94f2-2104ea035dd9.png?resizew=196)
(1)求证:
;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019c0405370c673e37b46c066eba839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1100a56e918f75ed6d955a802050f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7a63258b68e472bedca08381d47630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0346a3f335e7734772d32d9903f2cc.png)
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894203289747456/2895176848891904/STEM/54939ee7-0352-4531-94f2-2104ea035dd9.png?resizew=196)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2187a6bf82f1d5e534274e12f96594be.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00d4825584cf2a3f381de72c179e22.png)
您最近一年使用:0次
2022-01-15更新
|
418次组卷
|
5卷引用:新疆乌苏市第一中学2022-2023学年高二上学期线上第二次月考数学试题
名校
解题方法
5 . 如图所示的几何体是由棱台ABC-A1B1C1和棱锥D-AA1C1C拼接而成的组合体,其底面四边形ABCD是边长为2的菱形,且∠BAD=60°,BB1⊥平面ABCD,BB1=B1C1=1.
![](https://img.xkw.com/dksih/QBM/2021/12/13/2871831980900352/2875370116055040/STEM/2a6023404cc84a54ada1ba580b3830df.png?resizew=237)
(1)求证:平面AB1C⊥平面BB1D;
(2)求二面角A1-BD-C1的余弦值.
![](https://img.xkw.com/dksih/QBM/2021/12/13/2871831980900352/2875370116055040/STEM/2a6023404cc84a54ada1ba580b3830df.png?resizew=237)
(1)求证:平面AB1C⊥平面BB1D;
(2)求二面角A1-BD-C1的余弦值.
您最近一年使用:0次
2021-12-18更新
|
845次组卷
|
5卷引用:新疆昌吉教育体系2022届高三上学期第四次诊断测试数学(理)试题
新疆昌吉教育体系2022届高三上学期第四次诊断测试数学(理)试题湖南省长沙市第一中学2021-2022学年高二上学期12月第二次阶段检测数学试题(已下线)易错点10 立体几何-备战2022年高考数学考试易错题(新高考专用)(已下线)专题3.2 选修一+选修二第四章数列(易)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(人教A版2019选择性必修第二册)2023版 北师大版(2019) 选修第一册 名师精选卷 第十一单元 向量在立体几何中的应用 A卷
名校
6 . 在正三角形ABC中,E、F、P分别是AB、AC、BC边上的点,满足
(如图1).将
沿EF折起到
的位置,使二面角
成直二面角,连接A1B、A1P(如图2)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/e2179bba-35a2-4e7a-812a-f03e1a2c7f25.png?resizew=314)
(1)求证:
平面BEP;
(2)求直线A1E与平面A1BP所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67cdda05f0fab4c742a89d6214f0cd5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2d555062f34d5a74f6d47da4ea8888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc14ed237a4bcc35cbd1f5f1321b3718.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/e2179bba-35a2-4e7a-812a-f03e1a2c7f25.png?resizew=314)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4525c00ed908bed8ba8d353e747a858.png)
(2)求直线A1E与平面A1BP所成角的大小.
您最近一年使用:0次
名校
解题方法
7 . 已知抛物线
与直线
相交于A、B两点,O为坐标原点.
(1)求证:
;
(2)当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d0aafd52e26c241c46d0206f42f415.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b188ace13b36790a423b141e0eefa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2021-12-15更新
|
313次组卷
|
8卷引用:新疆维吾尔自治区昌吉市第一中学2023-2024学年高二上学期12月月考数学试题
8 . 已知椭圆E:
的离心率为
,椭圆E的长轴长为2
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/e661ca75-054f-4ff9-acce-1d6299d99cba.png?resizew=252)
(1)求椭圆
的标准方程;
(2)设
,
,过
且斜率为
的动直线
与椭圆
交于
,
两点,直线
,
分别交☉C:
于异于点
的点
,
,设直线
的斜率为
,直线
,
的斜率分别为
.
①求证:
为定值;
②求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/e661ca75-054f-4ff9-acce-1d6299d99cba.png?resizew=252)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71885f023172807ad43f2c9a670aa960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e318cefab1d71238b6a770e9d5fe154e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2d18088eecb661fd38b53f6fd0b09a.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ee950caafdafed20520afb0ce328d1.png)
②求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2021-12-15更新
|
1091次组卷
|
5卷引用:新疆乌鲁木齐市第八中学2021-2022学年高二上学期第二次月考数学(问卷)试题
名校
解题方法
9 . 如图,在四棱台
中,底面为矩形,平面
⊥平面
,且
.
![](https://img.xkw.com/dksih/QBM/2021/12/27/2881490546802688/2886003972800512/STEM/0638c9bd-01e4-4fe8-87b4-2c1dc72ebd50.png?resizew=303)
(1)证明:
面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04a2a39a060fb67b2c247c7db0a46d0.png)
(2)若
与平面
所成角为
,求锐二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8f540e06a3966c41a30ffa7458c018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8bc85055ac8f46caaf5d0101f10a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29dc9d7935459879a7fa8550a47c094d.png)
![](https://img.xkw.com/dksih/QBM/2021/12/27/2881490546802688/2886003972800512/STEM/0638c9bd-01e4-4fe8-87b4-2c1dc72ebd50.png?resizew=303)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4a49df7b0ed2729bdec1bca6a94f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04a2a39a060fb67b2c247c7db0a46d0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b771a919a059334671b00c678ce0f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04a2a39a060fb67b2c247c7db0a46d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7490e209d2f6154451d3ebbe66a60297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c00dc884490378da0c44528253584f.png)
您最近一年使用:0次
2022-01-02更新
|
681次组卷
|
3卷引用:新疆维吾尔自治区乌鲁木齐市实验学校2024届高三上学期1月月考数学试题
名校
解题方法
10 . 已知抛物线
:
上的点
到其焦点的距离为2.
(1)求点P的坐标及抛物线C的方程;
(2)若点M、N在抛物线C上,且
,求证:直线MN过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/406db3053f2fc3878762d8a0dfc4c425.png)
(1)求点P的坐标及抛物线C的方程;
(2)若点M、N在抛物线C上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56db85c6e5d2ee49ad2bed2bdef39ffa.png)
您最近一年使用:0次
2021-11-13更新
|
1209次组卷
|
5卷引用:新疆师范大学附属中学2020-2021学年高二12月月考数学(文)试题
新疆师范大学附属中学2020-2021学年高二12月月考数学(文)试题广东省深圳市高级中学等九校2022届高三上学期11月联考数学试题(已下线)考点40 抛物线-备战2022年高考数学典型试题解读与变式(已下线)收官卷01--备战2022年高考数学(文)一轮复习收官卷(全国乙卷)辽宁省辽东南协作体2023-2024学年高三下学期开学考试数学试题