2024·全国·模拟预测
名校
1 . 如图,
为圆锥的顶点,
为圆锥底面的圆心,
为底面直径,四边形
是梯形,且
,
为底面圆周上一点,点
在
上.
,求证:
平面
;
(2)当
时,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0be7e939e29ebb96a8622252b6ab21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f06f58813c2c9bd42bfc931d41e4f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703cb07903360e69f10ca3e5ef8e24a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963f0cda34e54f15725cee9448a4537e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e076c4c39e0591ed69ff780fb5a1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176b7beb3ee58b075801d6d7f6af1a4f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4dbea6a5faecdd8f6c06cf9fd43a90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6a0cee8226e82cc57916e10d533369.png)
您最近一年使用:0次
名校
2 . 如图,在四面体
中,
平面
,
是
的中点,
是
的中点,点
在线段
上,且
.
(1)求证:
平面
;
(2)若
,
,求
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276e3c9755dbd39fb01de614840d230f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/ef6a6ebb-5ffa-4529-ba15-c4471d878db6.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9abe6e8d1f4f1e8bdc46ddbae0cd789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07294c172f7055d46247353ed82ca81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967a99672b0ee1dd644a3cb0942a834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4eb857e33ab763e60bec825c84e22e1.png)
您最近一年使用:0次
2024-01-06更新
|
491次组卷
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3卷引用:广东省新高考2023-2024学年高二上学期数学期末模拟试题
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3 . 如图,在四棱锥P﹣ABCD中,
⊥底面
,
,
,
,点E为棱
的中点.
(1)证明:
;
(2)求直线
与平面
所成角的正弦值;
(3)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860850e8013f9399382f9344112725cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/387f9745-e10a-46be-b422-74d0b62b660e.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c38bbe49284a2ceab26001ced8cfd56.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba0dd982b283611f4d01be499546af9.png)
您最近一年使用:0次
2024-01-05更新
|
479次组卷
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3卷引用:广东省珠海市香樟中学2023-2024学年高二上学期期末模拟数学试题
名校
4 . 三棱柱
中,
别为
中点,且
.
平面
;
(2)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/c3796e7d187ad050142a731171260b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e21f8c475b8802737a87a98c55fd3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468cf6d76d8955f423ebd9469696ed25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0724df15393b74b306a84652f221bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2024-01-05更新
|
841次组卷
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3卷引用:广东省珠海市第一中学2024届高三上学期大湾区期末预测数学试题(二)
名校
5 . 如图,直角梯形ABCD中,
,
,
,点E为CD的中点,
沿着AE翻折至
,点M为PC的中点,点N在线段BC上.
(1)证明:
平面PBC
(2)若平面
平面ABCE,平面EMN与平面PAB的夹角为30°,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810227b082bd14dbcde85c3181841571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/b90874d4-5def-427b-985a-f2944ad97051.png?resizew=316)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53569e6ec795658b4fffcddeebe0f142.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d96357a07048ba79b8c84097d359d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48732e80ec3c3b6de906d598c69840d5.png)
您最近一年使用:0次
2023-12-30更新
|
222次组卷
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4卷引用:广东省梅州市2022-2023学年高二上学期期末数学试题
广东省梅州市2022-2023学年高二上学期期末数学试题(已下线)模块四 专题5 重组综合练(广东)期末终极研习室(高二人教A版)山东省枣庄市第三中学2023-2024学年高二上学期12月质量检测数学试题(已下线)专题06 二面角4种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)
名校
6 . 如图,在四棱锥
中,
,
,
,
,O为BD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/93c016e1-d769-48d9-a7fa-ae437f30b7b3.png?resizew=169)
(1)证明:OP⊥平面
.
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8da8430ae9b811b82527eb944cea18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef699f5dc072b853cfe700c6f1abbbae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8c7b69e2eed99438c8ceaa2b5d2cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b57478478b0a2efceac49aef02fe01a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/93c016e1-d769-48d9-a7fa-ae437f30b7b3.png?resizew=169)
(1)证明:OP⊥平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222caeed69cf757f2fe4ed030bdd0942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b2444e7dfd55d5738e153e857738aa.png)
您最近一年使用:0次
2023-12-20更新
|
279次组卷
|
9卷引用:广东省2019-2020学年高二上学期期末数学试题
名校
解题方法
7 . 如图,在四棱锥
中,
,
,
,三棱锥
的体积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/86794287-ee34-444c-b443-44bbb21f20c0.png?resizew=178)
(1)求点
到平面
的距离;
(2)若
,平面
平面
,点
在线段
上,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3402ea855e2ae2dcd98f607bef4fdd6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2d5ab801f2a84b78139b0ea2c5032b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb4a4ae03c0284c54e1636efca3e7ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c9298da3cd8b9db58692e0173f3fd3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/86794287-ee34-444c-b443-44bbb21f20c0.png?resizew=178)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de15d6c37a456491f6c9ea94ace9793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce5ac89d065f2cd37511b202ae9ea9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2023-12-18更新
|
975次组卷
|
4卷引用:广东省汕尾市海丰县彭湃中学2023-2024学年高二上学期期末数学保温试卷(二)
广东省汕尾市海丰县彭湃中学2023-2024学年高二上学期期末数学保温试卷(二)广东省广州市2024届高三上学期调研测试数学试题(B)(已下线)专题13 空间向量的应用10种常见考法归类(4)(已下线)6.3 空间向量的应用 (4)
名校
解题方法
8 . 如图,在多面体ABCDEF中,平面
平面ABCD,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/ac6f0d86-db40-4188-84c0-b0c96fc5749a.png?resizew=161)
(1)求证:
;
(2)若四边形ACEF为正方形,在线段AF上是否存在点P,使得二面角
的余弦值为
?若存在,请求出线段AP的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a4e3f0349fa83dc2a0b7d798f04843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/ac6f0d86-db40-4188-84c0-b0c96fc5749a.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c5fd65265f85df7d149d83d80d4e62.png)
(2)若四边形ACEF为正方形,在线段AF上是否存在点P,使得二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053af8641980763a7f0e77beefe0712d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
您最近一年使用:0次
2023-12-16更新
|
622次组卷
|
2卷引用:广东省深圳市龙岗区华中师大龙岗附属中学2022-2023学年高二上学期期末复习数学测试卷(一)
9 . 如图,已知边长为1的两个正方形
,
所在的平面互相垂直,点M,N分别在正方形对角线AC和BF上运动,且满足
(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/acc5eefe-39d0-458c-a3d0-365d83bd7812.png?resizew=162)
(1)求证:
平面
;
(2)当线段
的长最小时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461c44b06295b3104b1e739fc4235a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6d591c188a02ceb7d1a563557fc029.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/acc5eefe-39d0-458c-a3d0-365d83bd7812.png?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)当线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82cb18c10820d927ecd53326f58aaf8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee5a94f9063a71581f409e47ebaf602.png)
您最近一年使用:0次