名校
1 . 如下如图,水平桌面
上放置一个透明塑料制成的长方体水槽
,水面高度恰为长方体高的一半,在该长方体侧面
上有一个小孔
点到
的距离为3.将该长方体水槽绕
倾斜(
始终在桌面上,如下如图所示),此时水恰好流出时,液面与棱
分别相交于点
.
是矩形;
(2)当水恰好流出时,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf350a619ef25d8d9b988f3db804e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fd0ef94178e7bf9cee5e6982359845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f30422880a52311e68cfe78ad6131e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360a93b9662f0ab8a69b131497520b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48593b2bdb51550ec0a2b9d5893d36fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
(2)当水恰好流出时,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d81cdcae29cd4bbcd3d40800d19933.png)
您最近一年使用:0次
2 . 如图,在四面体
中,
平面
是
中点,
是线段
上一点(不包含端点),点
在线段
上,且
.
是
中点,求证:
∥平面
;
(2)若
是正三角形,
,且
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6073645d6b32ffd02450369e203ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f55e0dfffeac36dd64e41fec02fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82465b63174087aeba7788ed984583d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c973a61713bfedd9116625e5dafc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
3 . 如图,
平面
,四边形
为矩形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/f347f03e-11c6-44ce-8eee-1420d7a0cab1.png?resizew=144)
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325cbcd4b35b95eac598a8403c200e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603d9d99e8cacfe71e0f83ce425cecc1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/f347f03e-11c6-44ce-8eee-1420d7a0cab1.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94270844f197d524bf1da4f1385befd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eec658f69c267a70c1e8f9b744e282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
名校
4 . 如图,
,O分别是圆柱上、下底面圆的圆心,该圆柱的轴截面是边长为2的正方形ABCD,P,Q分别是其上、下底面圆周上的动点,已知P,Q位于轴截面ABCD的异侧,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/99f4e9b5-0314-479a-9b68-3bb5c27b0d29.png?resizew=130)
(1)当A,P,
,Q四点共面时,求
;
(2)当
时,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37389700fb7678d1d1ec0b5ba13e16b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/99f4e9b5-0314-479a-9b68-3bb5c27b0d29.png?resizew=130)
(1)当A,P,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5e1af15b01646e12b8ec729dfd0da2.png)
您最近一年使用:0次
2023-10-14更新
|
404次组卷
|
2卷引用:云南省会泽县实验高中大成中学2024届高三上学期9月月考数学试题
解题方法
5 . 已知长方体
,如图所示,其中
、
分别是线段
、
的中点.
(1)证明:
平面
;
(2)若
,直线
与
所成角的正切值为
,求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/20/cfcd19b4-410e-477b-8cb1-5bf3740014cf.png?resizew=173)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635a764c14e95e53a7a160d84706a449.png)
您最近一年使用:0次
解题方法
6 . 如图,在四棱锥
中,底面ABCD为平行四边形,M为PA的中点,E是PC靠近C的一个三等分点.
(1)若N是PD上的点,
平面ABCD,判断MN与BC的位置关系,并加以证明.
(2)在PB上是否存在一点Q,使
平面BDE成立?若存在,请予以证明,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/23/66fecf24-dadd-4c70-ae8e-7f802e56d4c8.png?resizew=138)
(1)若N是PD上的点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
(2)在PB上是否存在一点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665fa0f8a5c8060bc8d3ba7aadd0dddb.png)
您最近一年使用:0次
解题方法
7 . 如图,在正三棱柱
中,
是线段
上靠近点
的一个三等分点,
是
的中点.
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
平面
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/21/2281cca6-e4e0-42da-8a6c-49c5d9655e79.png?resizew=134)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bcb3226e013650b7d8827c31dd41d0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565517c781e119de8d8e9c9f29e4e2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bcb3226e013650b7d8827c31dd41d0.png)
您最近一年使用:0次
2023-06-18更新
|
729次组卷
|
7卷引用:云南省楚雄州2022-2023学年高二下学期期中教育学业质量监测数学试题
云南省楚雄州2022-2023学年高二下学期期中教育学业质量监测数学试题(已下线)第11讲 用空间向量研究距离、夹角问题11种常见考法归类-【暑假自学课】2023年新高二数学暑假精品课(人教A版2019选择性必修第一册)(已下线)1.4 空间向量应用(精讲)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)第06讲 1.4.2用空间向量研究距离、夹角问题(1)(已下线)1.4.2用空间向量研究距离、夹角问题(第1课时)湖南省株洲市炎陵县2023-2024学年高二上学期10月素质检测数学试题(已下线)专题06 用空间向量研究距离、夹角问题10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A版2019选择性必修第一册)
名校
解题方法
8 . 如图,在多面体
中,已知
是正方形,
,
平面
分别是
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/541ad583-96cf-4576-a8d1-6c559c0c5e22.png?resizew=156)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20e38a1b5cfffd43a3405481a1d67cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63f76636849706b8728b2181c3454cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67621a2ba5d5dc7e9f7866b0e748efc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88d863bbe0a300e8c2f464574c4f5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfe254b55db25eaae330bbb33b0a48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db3b70cd3a7b12306eb4fe39a208b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9741e43512323d96f36317543793ddf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/541ad583-96cf-4576-a8d1-6c559c0c5e22.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73153657848013d2a1c3247d7f84ddeb.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
2023-05-09更新
|
1122次组卷
|
3卷引用:云南省曲靖市第二中学2023届高三适应性考试数学试题
名校
9 . 如图,线段
是圆柱
的母线,
是圆柱下底面
的直径.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/4dfd96be-ec3f-4239-afd6-d0192445221b.png?resizew=130)
(1)弦
上是否存在点D,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2e528bb8fc7c95fec7ecc510d04034.png)
平面
,请说明理由;
(2)若
,
,点
,A,B,C都在半径为
的球面上,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/4dfd96be-ec3f-4239-afd6-d0192445221b.png?resizew=130)
(1)弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2e528bb8fc7c95fec7ecc510d04034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc1c04946340198af69170d4ebd4b42.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ef4dc68a6a26ba6be210d8cf1f0c0e.png)
您最近一年使用:0次
2023-04-02更新
|
1082次组卷
|
4卷引用:云南省昆明市第一中学2023届高三第八次考前适应性训练数学试题
解题方法
10 . 如图,在几何体
中,菱形
所在的平面与矩形
所在的平面互相垂直.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/ac1aeb1a-876f-4068-97b4-b4c4e18f5870.png?resizew=174)
(1)若
为线段
上的一个动点,证明:
∥平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)若
,
,直线
与平面
所成角的正弦值为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/ac1aeb1a-876f-4068-97b4-b4c4e18f5870.png?resizew=174)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f75c42c77264076166fff76cfab4ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
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