名校
1 . 如图,四棱锥中,底面
为直角梯形,其中
,
,面
⊥面
,且
,点
在棱
上.
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b54647a7c34d1046c8d6c198d3654d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932a04304f2d4975955d4baabb2deeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e97bd4e9a6cfde753bfbd6e36136c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135a12aa48eb33bf5116662e0f9f0799.png)
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2023-12-11更新
|
776次组卷
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2卷引用:浙江省湖州市天略高中2021-2022学年高三上学期期末模拟数学试题
22-23高一下·浙江湖州·期末
名校
解题方法
2 . 已知面积为
的菱形ABCD如图①所示,其中
,E是线段AD的中点.现将
沿AC折起,使得点D到达点S的位置.
(1)若二面角
的平面角大小为
,求三棱锥
的体积;
(2)若二面角
的平面角
,点F在三棱锥的表面运动,且始终保持
,求点F的轨迹长度的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f63756fe9251e65cc14e1ce9723d4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/5c440f61-f121-4d8a-9b52-70a3da2360d7.png?resizew=403)
(1)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bef3a2b3b1ca1a8dce50114e893599e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bef3a2b3b1ca1a8dce50114e893599e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84114a9fc78953326cc8b33a1f4cc772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
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22-23高一下·浙江湖州·期末
名校
3 . 三棱锥
中,平面
平面
,
是边长为2的正三角形,
,则三棱锥
外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a156363bb1b251816b8a5982cc9425a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-06-25更新
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852次组卷
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5卷引用:浙江省湖州市2022-2023学年高一下学期期末数学试题
22-23高一下·浙江湖州·期末
4 . 已知正四棱台
的所有顶点都在球O的球面上,
,
,
为
内部(含边界)的动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338c6c83ab4abc895ac36ab888a55be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55dcbe075165566acf363cd199f07ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d11746005a0e806f2d27f89e3d9e9c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/127bbf43-f2b7-435d-a19c-de87f5d5e5c6.png?resizew=216)
A.直线![]() ![]() |
B.球O的体积为![]() |
C.直线![]() ![]() ![]() |
D.![]() ![]() |
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22-23高一下·浙江湖州·期末
名校
5 . 在空间中,l,m是不重合的直线,
,
是不重合的平面,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() | D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-06-25更新
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836次组卷
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9卷引用:浙江省湖州市2022-2023学年高一下学期期末数学试题
(已下线)浙江省湖州市2022-2023学年高一下学期期末数学试题内蒙古呼和浩特铁路第一中学2022-2023学年高一下学期期末考试数学试题黑龙江省大庆实验中学实验二部2022-2023学年高一下学期期末考试数学试题吉林省通化市梅河口市第五中学2023-2024学年高二上学期开学考试数学试题江苏省苏州市常熟市2023-2024学年高二上学期学生暑期自主学习调查数学试题湖南师范大学附属中学2023-2024学年高二上学期入学考试数学试题浙江省金华市东阳市外国语学校2023-2024学年高二上学期开学检测数学试题河南省焦作市宇华实验学校2023-2024学年高二上学期宏志班第二次月考数学试题(已下线)8.6.2 直线与平面垂直(第1课时)直线与平面垂直的判定(导学案) -【上好课】
6 . 在正方体
中,点
,
分别是棱
,
的中点,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfcc1a9441d56ceb32c6b70c2130a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee72261f6901e62dfd0ffe547406544.png)
A.存在![]() ![]() ![]() |
B.存在![]() ![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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2023-06-19更新
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5卷引用:浙江省湖州市吴兴高级中学2023-2024学年高二上学期10月阶段性测试数学试题
名校
7 . 已知直线BC垂直单位圆O所在的平面,且直线BC交单位圆于点A,
,P为单位圆上除A外的任意一点,l为过点P的单位圆O的切线,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
A.有且仅有一点P使二面角![]() |
B.有且仅有两点P使二面角![]() |
C.有且仅有一点P使二面角![]() |
D.有且仅有两点P使二面角![]() |
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10卷引用:浙江省湖州市第二中学2024届高三下学期新高考模拟数学试题
浙江省湖州市第二中学2024届高三下学期新高考模拟数学试题中学生标准学术能力诊断性测试2020-2021学年高三上学期1月测试理科数学(一卷)试题(已下线)THUSSAT2020-2021学年高三上学期1月诊断性测试理科数学试题上海市曹杨第二中学2022-2023学年高二上学期期中数学试题(已下线)期中真题必刷压轴60题(18个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)(已下线)期中测试卷01(测试范围:第10-11章)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)浙江省名校协作体2024届高三下学期开学适应性考试数学试题(已下线)新题型01 新高考新结构二十一大考点汇总-2(已下线)第二章 立体几何中的计算 专题七 空间范围与最值问题 微点7 角度的范围与最值问题(二)【基础版】(已下线)压轴题02圆锥曲线压轴题17题型汇总-1
解题方法
8 . 已知梯形
中,
,
,
,
.现沿
将
折起至
(
平面
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/5e4147f2-b84d-494a-80af-c60f8954cae8.png?resizew=447)
(1)若
(如图1),求
的值;
(2)当
且二面角
的平面角为
时(如图2),求
与平面
所成角的正弦值.
![](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/8424b9d5e1b342fafe8afb8f01f67be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f8b2bbbeadfaf1d73bec472a51444c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68696b781af2609327222d22cb7bab3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5069fd8f468cb41cfbe72d15d76ff1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/5e4147f2-b84d-494a-80af-c60f8954cae8.png?resizew=447)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0de9c590fdc63d21052099df184776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c35e8cf7b77cda3a23aaca62cd937f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d9c105f5558d48cc42218ed2b3ef4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ef4384024108d23c4e6493cc607831.png)
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9 . 已知平面四边形
中,
,现将
沿
折成一个四面体,则当四面体的外接球表面积最小时,异面直线
与
所成角的余弦值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b08f0afde7f0a296215845f36d6279b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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10 . 如图,在直三棱柱
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/307298a6-97ed-487d-ac51-59f2f1677595.png?resizew=142)
(1)证明:
;
(2)若三棱锥
的体积为
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af405392c66b86550a58f1cb9868717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/307298a6-97ed-487d-ac51-59f2f1677595.png?resizew=142)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e5dc81fbafbe58bff0842f7776d80a.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c8896fdc11b62ba3966acbf4f06375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e8b8ade7525270e2c60eeb4aebb17d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
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