名校
1 . 国家主席习近平指出:中国优秀传统文化有着丰富的哲学思想、人文精神、教化思想、道德理念等,可以为人们认识和改造世界提供有益启迪.我们要善于把弘扬优秀传统文化和发展现实文化有机统一起来,在继承中发展,在发展中继承.《九章算术》作为中国古代数学专著之一,在其“商功”篇内记载:“斜解立方,得两堑堵,斜解堑堵,其一为阳马,一为鳖臑”.刘徽注解为:“此术臑者,背节也,或曰半阳马,其形有似鳖肘,故以名云”. 鳖臑,是我国古代数学对四个面均为直角三角形的四面体的统称.在四面体
中,PA⊥平面ACB.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/58c3ca96-ee25-4cb8-8cc9-cb263cb93982.png?resizew=314)
(1)如图1,若D、E分别是PC、PB边的的中点,求证:DE
平面ABC;
(2)如图2,若
,垂足为C,且
,求直线PB与平面APC所成角的大小;
(3)如图2,若平面APC⊥平面BPC,求证:四面体
为鳖臑.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f44cc3030c28fdf4776b1a29c5df7c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/58c3ca96-ee25-4cb8-8cc9-cb263cb93982.png?resizew=314)
(1)如图1,若D、E分别是PC、PB边的的中点,求证:DE
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef336bafe4e08c983d0286c13182d81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bf93402a48635572cbaadc2513ecd5.png)
(3)如图2,若平面APC⊥平面BPC,求证:四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f44cc3030c28fdf4776b1a29c5df7c.png)
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2022-10-20更新
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143次组卷
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2卷引用:四川省泸州市龙马高中2022-2023学年高二上学期第一次月考数学(理)试题
2 . 如图,点A,B,C在球心为O的球面上,已知
,
,
,球O的表面积为
,下列说法正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/ba962dc3-32d5-4672-8af3-a88ecba2ed42.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63850c0f9ba71c7d6f20903707b2d98e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/ba962dc3-32d5-4672-8af3-a88ecba2ed42.png?resizew=153)
A.![]() |
B.平面![]() |
C.OB与平面ABC所成角的正弦值为![]() |
D.平面OAB与平面ABC所成角的余弦值为![]() |
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2022-09-23更新
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3卷引用:四川省蓉城名校联盟2022-2023学年高三上学期入学联考文科数学试题
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3 . 如图,在四棱锥P-ABCD中,底面ABCD是边长为2的正方形,点E、F分别是棱PC和PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/ab7f1bf1-a317-49e9-811b-5775a603632a.png?resizew=195)
(1)求证:EF
平面PAB;
(2)若AP=PD=2,平面PAD⊥平面ABCD,求直线PB和平面ABCD所成角的正切值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/ab7f1bf1-a317-49e9-811b-5775a603632a.png?resizew=195)
(1)求证:EF
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)若AP=PD=2,平面PAD⊥平面ABCD,求直线PB和平面ABCD所成角的正切值.
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2022-09-17更新
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300次组卷
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3卷引用:四川省眉山第一中学2022-2023学年高二上学期10月月考数学(文科)试题
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解题方法
4 . 在正方体
中,已知点
分别为棱
上动点(含端点),设直线
与直线
的所成角为
,直线
与平面
所成角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a773f779cd892616a4ff68d3715f173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991a908f49f9deb228415dcb3d9248aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.直线![]() ![]() ![]() | B.![]() |
C.直线![]() ![]() ![]() | D.![]() |
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2022-09-06更新
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5卷引用:四川省仁寿第一中学校南校区2022-2023学年高一下学期期末适应性考试数学试题
四川省仁寿第一中学校南校区2022-2023学年高一下学期期末适应性考试数学试题重庆市铜梁区2021-2022学年高一下学期期末数学试题(已下线)模块三 专题3 小题满分挑战练(2)(人教B)广东省珠海东方外语实验学校2022-2023学年高一下学期期末数学试题(已下线)核心考点08空间直线、平面的垂直-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)
名校
5 . 如图,在四棱锥
中,底面
为平行四边形,
,
为
的中点,
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/3a494f4d-a05c-47c2-aeef-9cf0bfc06be0.png?resizew=145)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
平面
;
(2)证明:平面
平面
;
(3)求直线
与平面
所成角的正切值.
![](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/8b585df4e8cf80131f81d863871a841a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1a40b69386a8458722c4ecefa1fe8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/3a494f4d-a05c-47c2-aeef-9cf0bfc06be0.png?resizew=145)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2022-09-06更新
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565次组卷
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2卷引用:四川省宜宾市高县中学校2022-2023学年高二上学期开学考试数学试题
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解题方法
6 . 已知正方体
的棱长为2,点O为
的中点,若以O为球心,
为半径的球面与正方体
的棱有四个交点E,F,G,H,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/045f281d-8f3c-4c3f-844a-53dfd28029f9.png?resizew=221)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/045f281d-8f3c-4c3f-844a-53dfd28029f9.png?resizew=221)
A.![]() ![]() |
B.![]() |
C.![]() ![]() |
D.平面![]() ![]() |
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2022-08-05更新
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1169次组卷
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5卷引用:四川省宜宾市第四中学校2023-2024学年高二上学期开学考试数学试题
四川省宜宾市第四中学校2023-2024学年高二上学期开学考试数学试题浙江省绍兴市诸暨市2021-2022学年高二下学期学考模拟(4)数学试题湖南省长沙市第一中学2022-2023学年高三上学期月考(一)数学试题(已下线)湖南省怀化市2022-2023学年高三上学期期末数学试题变式题11-16湖南省长沙市望城区第一中学2022-2023学年高二下学期期末模拟数学试题
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7 . 如图,在三棱柱
中,点
在平面
上的射影为
的中点
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/255d6a1f-eeab-4b2f-ae25-1fa224296882.png?resizew=175)
(1)求证:
平面
;
(2)若
,求直线
与平面
所成角的正弦值的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bd8c13192ca45c16dad5d59b547220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cb1df353c6907fec5823964eef36c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095d52314413eb48ceeeb7ac063c5b91.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/255d6a1f-eeab-4b2f-ae25-1fa224296882.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890e58791814622b87c4d60ea971f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46b4c7585238f53d85f5a96d35d95af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
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2022-07-18更新
|
1176次组卷
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5卷引用:四川省内江市第六中学2022-2023学年高一(创新班)下学期入学考试数学试题
四川省内江市第六中学2022-2023学年高一(创新班)下学期入学考试数学试题山东省聊城市2021-2022学年高一下学期期末数学试题(已下线)8.6.2直线与平面垂直的判定定理(第1课时)(精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)模块四 专题2 期末重组综合练(山东)江西省萍乡市安源中学2022-2023学年高二下学期期中考试数学试题
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8 . 如图,在直三棱柱
中,
,
,E为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021544043560960/3023577646612480/STEM/3867385c98514522b71c4fcc07b1987f.png?resizew=213)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3be3dcde7b744f420a588cb8dd5b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021544043560960/3023577646612480/STEM/3867385c98514522b71c4fcc07b1987f.png?resizew=213)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88762049d100f82fc0635f93ad656c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
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2022-07-16更新
|
959次组卷
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6卷引用:四川省遂宁中学校2022-2023学年高二上学期9月月考数学(理)试题
9 . 如图,在三棱锥D-ABC中,△ABC是边长为2的正三角形,△ADC是以AC为底边的等腰直角三角形,E为AC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/de80a130-22ee-4153-ac43-5f3fe2fb2221.png?resizew=194)
(1)证明:平面BED⊥平面ACD;
(2)若BD=2,点F在BD上,当△AFC的面积最小时,求FA与平面ABC所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/de80a130-22ee-4153-ac43-5f3fe2fb2221.png?resizew=194)
(1)证明:平面BED⊥平面ACD;
(2)若BD=2,点F在BD上,当△AFC的面积最小时,求FA与平面ABC所成角的正弦值.
您最近一年使用:0次
10 . 四棱锥
的底面ABCD是等腰梯形,
,平面
平面ABCD,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/a3637709-fb8c-40a0-91d7-b55e0e1610ec.png?resizew=193)
(1)求证:
;
(2)求AP的长度;
(3)求直线AC与平面PBC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641aa755ada1d83daafc82d5f1fa88db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23190378f340ce5e8306f88c3caef1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8825d400f453c5c17a7beeb1cc9a9cf3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/a3637709-fb8c-40a0-91d7-b55e0e1610ec.png?resizew=193)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
(2)求AP的长度;
(3)求直线AC与平面PBC所成角的正弦值.
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