解题方法
1 . 如图,在棱长为2的正方体
中,
为
内的任意一点(含边界),则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/6701e148-7d5c-4f92-b9ad-cc4599b43a70.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de60f6ffd5ab327d4cfe32d26d95da70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/6701e148-7d5c-4f92-b9ad-cc4599b43a70.png?resizew=165)
A.三棱锥![]() |
B.点![]() ![]() ![]() |
C.向量![]() ![]() ![]() |
D.若线段![]() ![]() ![]() ![]() |
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解题方法
2 . 如图,在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
为
的中点,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
平面
,
(1)证明:
;
(2)若
平面
,点
在四棱锥
的底面内,且在以
为焦点,并满足
的椭圆弧上.若二面角
的余弦值为
,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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1caf930db3fed80bdba0ee52bc8a1b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/a9e26599-26d2-4bfb-8dde-2f1f9619f792.png?resizew=178)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a69df64811eb0866c84207f24dfae99.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7f8a6b71a28aa8beef35e1cd77c177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9571f313b799a9654ac131c335807386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3ec0acc744c89cc5e7bb63c32a8714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e468f168f3657d84d44be5eb89a62d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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3 . 在棱长为2的正方体
中,点Q为线段
(包含端点)上一动点,则下列选项正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/780aff38-3466-4ef1-b766-dec7e919f170.jpg?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/780aff38-3466-4ef1-b766-dec7e919f170.jpg?resizew=172)
A.三棱锥![]() |
B.在Q点运动过程中,存在某个位置使得![]() ![]() |
C.![]() ![]() |
D.直线AQ与平面![]() ![]() |
您最近一年使用:0次
2023-12-19更新
|
480次组卷
|
4卷引用:广西玉林市部分学校2024届高三上学期12月模拟数学试题
广西玉林市部分学校2024届高三上学期12月模拟数学试题广西壮族自治区贵港市2024届高三上学期12月模拟考试数学试题(已下线)第5讲:立体几何中的动态问题【练】(已下线)第二章 立体几何中的计算 专题六 空间定值问题 微点6 空间定值问题综合训练【培优版】
解题方法
4 . 如图,在棱长为2的正方体
中,点
在平面
内且
,延长
交平面
于点
,则以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/849b7c1951eb016e65f615d1a782af10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/46841383-a72a-41ab-aa77-f7a3095680fd.png?resizew=164)
A.线段![]() ![]() |
B.点![]() ![]() |
C.直线![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
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名校
解题方法
5 . 如图,已知直圆柱的上、下底面圆心分别为
,
是圆柱的轴截面,正方形
内接于下底面圆
,点
是
中点,
.
平面
;
(2)若点
为线段
上的动点,求直线
与平面
所成角的余弦值的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b464808cf5267a09ef7c593bd10af25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010fc88cbf6f12d72922cb9ef38756a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2023-10-11更新
|
1032次组卷
|
2卷引用:广西三新学术联盟2023-2024学年高二上学期10月联考数学试题
6 . 在直三棱柱
中,
,且
,
为线段
的中点,
为棱
上的动点,平面
过
三点,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b3abffbc8bfdd701f88b23e05e5306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62227b4b9cc501bee165642e9a3d5334.png)
A.三棱锥![]() |
B.平面![]() |
C.当![]() ![]() ![]() ![]() |
D.存在点![]() ![]() ![]() |
您最近一年使用:0次
2023-09-27更新
|
673次组卷
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4卷引用:广西玉林市北流市实验中学等四校2023-2024学年高二上学期期中联考质量评价检测数学试题
广西玉林市北流市实验中学等四校2023-2024学年高二上学期期中联考质量评价检测数学试题广东省南粤名校2024届高三上学期9月学科综合素养评价联考数学试题辽宁省部分名校2023-2024学年高二上学期联考数学试题(已下线)难关必刷01 空间向量的综合应用-【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)
名校
7 . 如图,四棱锥
内,
平面
,四边形
为正方形,
,
.过
的直线
交平面
于正方形
内的点
,且满足平面
平面
.
(1)求点
的轨迹长度;
(2)当二面角
的余弦值为
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd051fedb6691e2183e658f1fe487ca.png)
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392469b357b12b998528499929366c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03203dd5ac79dd8c6707e4340773359.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/1/1459c43b-c75d-4ea6-bb40-a3441af6132b.png?resizew=130)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a1a4b8e6a3514ac93b69042d1f9553b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ec70bc9d4f8f5df312e2f09ee3bcb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5c3c0ab9b7ba915604ed7e4e19254f.png)
您最近一年使用:0次
解题方法
8 . 如图所示的几何体是由正方形
沿直线
旋转
得到的,设
是圆弧
的中点,
是圆弧
上的动点(含端点),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8192018a58bb1fe23769a48a4d9042ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb53e0fdf3ebeb96e4f69feacbd80e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/23/98dc27c3-0af1-4ff4-8c8c-402583318b11.png?resizew=136)
A.存在点![]() ![]() |
B.不存在点![]() ![]() |
C.存在点![]() ![]() ![]() |
D.不存在点![]() ![]() ![]() ![]() |
您最近一年使用:0次
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解题方法
9 . 在
中,
,
分别是
上的点,满足
且
经过
的重心,将
沿
折起到
的位置,使
,
是
的中点,如图所示.
(1)求
与平面
所成角的大小;
(2)在线段
上是否存在点
(
不与端点
重合),使平面
与平面
垂直?若存在,求出
与
的比值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9453c18e40f13c75f430e2286f91e6c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cae7cc6665dc8edfb9060075b3afb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2fef4031c10abc18c8747af6b9a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/23/9c9c456d-2e39-4975-bf92-618d717b249f.png?resizew=268)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b3c60399065a6979ef25c46f7ec949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d4248d9672aa3436ea1d9f1e267edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
您最近一年使用:0次
2023-09-18更新
|
1237次组卷
|
13卷引用:广西玉林市北流市实验中学等四校2023-2024学年高二上学期期中联考质量评价检测数学试题
广西玉林市北流市实验中学等四校2023-2024学年高二上学期期中联考质量评价检测数学试题江苏省常州市八校2021-2022学年高二下学期期中联考数学试题云南省昆明市第十中学2023届高三数学省测数学纠错试题云南省曲靖市麒麟区第一中学2023届高三下学期2月月考数学试题云南省昆明市寻甸回族彝族自治县民族中学2023届高三下学期2月月考数学试题云南省曲靖市宣威市第七中学2023届高三高考数学学情检测数学试题(一)(已下线)高二上学期期中【夯实基础60题考点专练】(选修一全部内容)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)四川省广安第二中学校2023-2024学年高二上学期第一次月考数学试题(已下线)专题03 空间向量求角度与距离10种题型归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)(已下线)难关必刷01 空间向量的综合应用-【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)2023-2024学年高二上学期数学期末预测能力卷(人教A版2019)(已下线)专题01 空间向量与立体几何(3)(已下线)第3章 空间向量及其应用(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)
名校
解题方法
10 . 如图,在三棱锥
中,
分别为
的中点,
为正三角形,平面
平面
.
到平面
的距离;
(2)在线段
上是否存在异于端点的点
,使得平面
和平面
夹角的余弦值为
若存在,确定点
的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5ccda729a8bf53459dd29ecc08b8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df21b7b7a47318ef2bb069450c39f1cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8549d17620cd96ba90b38f7b34b67a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2023-04-18更新
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1426次组卷
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4卷引用:广西壮族自治区南宁市第三中学2023届高三模拟数学(理)试题(一)