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1 . 如图,已知正方体
的棱长为2.
,
分别为
与
上的点,且
,
.
(1)求证:
;
(2)求平面
与平面
的夹角的余弦值.
![](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/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f308dbf591d107899c6b6a294037088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbea35579e39f3430d7a0ab3b2a984af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/f4217908-8f82-4c26-b9ec-3f3a08c742a4.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7949f3086ace91c6c3fa6a91979c93d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbee3d2962bee74bf65ad4e71bca155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193b5b41994c2a4dfa5bb0bc984061cc.png)
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2 . 如图,四棱锥
中,底面ABCD为等腰梯形,
,
,且平面
平面ABCD,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/31/40128787-8a74-438b-9915-ad4d72ca8e5a.png?resizew=169)
(1)求证:
;
(2)
与平面
所成的角为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4426db778693c875e2dca9220875d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/555e29e445c95ddb514840f63fbb1d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15eae3c2cb4274a947f6a011960934d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/31/40128787-8a74-438b-9915-ad4d72ca8e5a.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/712f7375b4ede5f75c0d81870c0f86af.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e831e5c6bd9bced710de6c6965ae800.png)
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2023-05-28更新
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644次组卷
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3卷引用:湖南省岳阳市岳阳县第一中学2022-2023学年高三下学期入学考试数学试题
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3 . 已知三棱锥
的四个顶点都在球
的球面上,
,
,则球
的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afbaf3c529348b4c619e4ea6c714dd37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0595498034037b58538f8056dbc6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-14更新
|
5467次组卷
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12卷引用:湖南省长沙市长郡湘府中学2023-2024学年高三上学期入学考试(暑假作业检测)数学试题
湖南省长沙市长郡湘府中学2023-2024学年高三上学期入学考试(暑假作业检测)数学试题广东省广州市2023届高三综合测试(一)数学试题江西省南昌市2023届高三三模数学(文)试题安徽省定远中学2023届高三下学期第二次模拟数学试卷四川省成都市树德中学2023届高三三诊模拟数学(理)试题(已下线)专题09 立体几何初步湖北省咸宁鲁迅学校2023届高三下学期5月月考数学试题(已下线)题型19 10类球体的外接及内切解题技巧四川省乐山市沫若中学2022-2023学年高二下学期4月月考数学(理)试题江苏省南通市海门中学2022-2023学年高二下学期6月学情调研数学试题四川省德阳市什邡市什邡中学2023-2024学年高二上学期10月月考数学试题(已下线)第八章立体几何初步(单元测试)-【上好课】-(人教A版2019必修第二册)
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4 . 如图,已知
、
是球
的球面上两点,
,过
作互相垂直的两个平面截球得到圆
和圆
,若
,则球
的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c82e91c0dae8752312a3c14536d647e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/7cf947a3-91da-46f2-a43e-03d2e6dba196.png?resizew=234)
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5 . 已知三棱锥
的每个顶点都在球
的球面上,
,
,
,过
作平面
的垂线
,且
,
,
与
都在平面
的同侧,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603de302cb6fa781b16a0be8c828c7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730c54e8f9c18747aacf69441570e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f1c40ebcc993a5778478154c124f0c.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/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.三棱锥![]() ![]() |
B.![]() |
C.![]() |
D.球![]() ![]() |
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2021-05-07更新
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6卷引用:湖南省2021届高三下学期3月联考数学试题
湖南省2021届高三下学期3月联考数学试题山东省临沂市沂水县第一中学2021届高三高考二轮模拟检测数学试题(已下线)第12题 多选题中的立体几何综合问题-2021年高考数学真题逐题揭秘与以例及类(新高考全国Ⅰ卷)广东省广州市省实,执信,广雅,二中,六中五校2020-2021学年高一下学期期末联考数学试题江苏省苏州中学2020-2021学年高一下学期6月月考数学试题重庆市万州第二高级中学2022-2023学年高二上学期开学考试数学试题
6 . 如图,已知
,
平面
,
平面
,过点
且垂直于
的平面
与平面
的交线为
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/03550c3c-6853-49e4-a2b0-a5d97a5ee809.png?resizew=156)
(1)证明:
平面
;
(2)设点
是
上任意一点,求平面
与平面
所成锐二面角的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5ae16a7145a28a91d45ef950a07c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c770a1e784ddbc07588e2bcd80e151ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/03550c3c-6853-49e4-a2b0-a5d97a5ee809.png?resizew=156)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次
2020-09-14更新
|
750次组卷
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6卷引用:湖南省百校联考2020-2021学年高三上学期9月月考数学试题
湖南省百校联考2020-2021学年高三上学期9月月考数学试题江苏省百校联考2020-2021学年高三上学期第一次考试数学试题金太阳联考2020-2021学年新高考(广东卷)数学试题(已下线)专题8.9 《空间向量与立体几何》单元测试卷(测)-2021年新高考数学一轮复习讲练测辽宁省沈阳市大东区2020-2021学年高三(上)第一次月考数学试题山西省晋城市2020-2021学年高二上学期期中数学(理)试题
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7 . 已知三棱柱
中,
,
是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/dff8f8c3-b2fb-4ef3-b490-c205bb1e2700.jpg?resizew=224)
(1)求证:
;
(2)若侧面
为正方形,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4639a9dc0bc99101cbde59fef04b4a2b.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/7f00f9d78c6df49f58a527aac02be39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acdac99ea95c00e80fbf49941ba2803.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/dff8f8c3-b2fb-4ef3-b490-c205bb1e2700.jpg?resizew=224)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
(2)若侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ce0eeb7a6d6c7806cf2352b9fe15c2.png)
您最近一年使用:0次
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8 . 设
是两条不同的直线,
是两个不同的平面,下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.如果![]() ![]() ![]() ![]() ![]() ![]() | B.如果![]() ![]() ![]() ![]() ![]() |
C.如果![]() ![]() ![]() | D.如果![]() ![]() ![]() ![]() ![]() ![]() |
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2020-02-22更新
|
312次组卷
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3卷引用:2020届湖南省长沙市第一中学高三第二次月考数学(文)试题
2020届湖南省长沙市第一中学高三第二次月考数学(文)试题福建省福州华侨中学2022届高三上学期期中考数学试题(已下线)8.5.3 平面与平面平行 (第1课时) 平面与平面平行的判定(分层作业)-【上好课】
9 . 如图,在四棱锥
中,平面PAD垂直平面ABCD,底面
为平行四边形,已知
,
,
于
.
![](https://img.xkw.com/dksih/QBM/2018/4/9/1920593447059456/1920893169713152/STEM/f8f142d2576848918b371d476d46eb34.png?resizew=175)
(1)求证:
;
(2)若平面
平面
,且
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644ec7c3e0d9472da97a78fe7b004a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba1c6851a385f34214677113d04ffa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9df6a61c453b50f0fea4f4f640df45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2018/4/9/1920593447059456/1920893169713152/STEM/f8f142d2576848918b371d476d46eb34.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1030483a875845da3d8bdeead1c41ecd.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbb79892c8cb8871a08437acc09bc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337421403f59eb20bdc8b446691f8a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89dead99c372e7947e7337dfc4d2a7e1.png)
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