1 . 如图,在三棱柱
中,
、
分别是
、
上的点,且
.若
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34e64e89969cc8ed3ab95c39adfbdca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f9780b8092b4701bd329fbe4a95a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af2626608f61a4cfbb86494bd6df0e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/24622eee-9683-4944-b923-a35d8ef719ab.png?resizew=190)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-12-08更新
|
251次组卷
|
2卷引用:江西省上饶市沙溪中学2023-2024学年高二上学期期末数学试题
名校
解题方法
2 . 如图,在平行六面体
中,以顶点A为端点的三条棱长度都为2,且两两夹角为
.求:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/6585d246-4359-4fc7-82c2-ceb226242bd2.png?resizew=231)
(1)
的长;
(2)
与
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/6585d246-4359-4fc7-82c2-ceb226242bd2.png?resizew=231)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec46f7c4da972fef6e940158628242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
您最近一年使用:0次
2023-12-01更新
|
302次组卷
|
2卷引用:江西省景德镇市景德镇一中2023-2024学年高二上学期1月考试数学试题
3 . 如图,在四棱柱
中,底面
是菱形,侧面
是正方形,且
,
,
,
与
交于点
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/9834ada5-24e8-443c-ace1-7d1861644edf.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22ebcc4aa98d46366df48f751a5f368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404005c9bb408214fe5bafee7507e175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1204e73cda78d8d10d54f793c7e83063.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/9834ada5-24e8-443c-ace1-7d1861644edf.png?resizew=183)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-27更新
|
211次组卷
|
3卷引用:江西省新余市2023-2024学年高二上学期期末质量检测数学试题卷
解题方法
4 . 如图,四面体OABC各棱的棱长都是1,
是
的中点,
是
的中点,记
.
(1)用向量
表示向量
;
(2)利用向量法证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352afb2166bc2d282d55bd7bba4388e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/69f241eb-bce4-4006-b7c2-d6b3c14f35f7.png?resizew=165)
(1)用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fddc1f1c50aab4de7fff286d691b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21909dd065ccc349a2cbfd4c3cf4976b.png)
(2)利用向量法证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178e3fa2e4de57a4c067e79be7d798e7.png)
您最近一年使用:0次
2023-11-23更新
|
207次组卷
|
3卷引用:江西省南昌市2023-2024学年高二上学期期末模拟数学试题
5 . 中国古代数学瑰宝《九章算术》中记载了一种称为“刍童”的几何体,该几何体是上下两个底面平行,且均为矩形的六面体.现有一“刍童”
,如图所示.
,
,
,
,
,
与
的交点为
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f41d364b55d88688cd1f571ed231228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e05cfa9dc32a9960f7d74fcd8df349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da959f0ca0c7bc8efe81c2d9a2addd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590dd3b109776fa5521dfc9eecdfb87b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4579790403165ca5474ce39c0e5c72dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6af0c150e2b3f7215d90ee21ef01e.png)
A.![]() | B.18 | C.![]() | D.21 |
您最近一年使用:0次
解题方法
6 . 如图,二面角
的棱上有两个点
,
,线段
与
分别在这个二面角两个面内,并且都垂直于棱
.若二面角
的平面角为
,且
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/22/24ea2f61-09a1-4795-8a9b-e9994762f8cb.png?resizew=191)
您最近一年使用:0次
2023-11-21更新
|
360次组卷
|
3卷引用:江西省宜春市丰城市东煌学校2023-2024学年高二上学期12月月考数学试题
解题方法
7 . 已知矩形ABCD中,
,
,将矩形ABCD沿对角线AC折起,使平面ABC与平面ACD垂直,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2eaf9175bb8671eae6d9361f319760.png)
A.![]() | B.![]() | C.![]() | D.4 |
您最近一年使用:0次
2023-11-17更新
|
213次组卷
|
4卷引用:江西省上饶市艺术学校2023-2024学年高二上学期12月月考数学试题
江西省上饶市艺术学校2023-2024学年高二上学期12月月考数学试题山东省临沂市部分区县2023-2024学年高二上学期11月普通高中学科素养水平监测试数学试卷山东省临沂市临沭县2023-2024学年高二上学期期中考试数学试题(已下线)模块三 专题3 小题满分挑战练(2) 期末终极研习室(高二人教A版)
名校
解题方法
8 . 如图,在平行六面体
中,E,F分别为棱
,CD的中点,满足
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a291eb49c5a952ececabb64aa64907.png)
.
![](https://img.xkw.com/dksih/QBM/2023/11/13/3367171691675648/3368455133519872/STEM/e3c066027601461b9f8e8ca1fd877a92.png?resizew=213)
(1)求线段EF的长度;
(2)求直线AD 与直线EF夹角的余弦值.
![](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/d9d379ba28e37b99fc08b44b9ab6a6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5e5c0d0bcecfefc6ce763098a3ddc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6627c2c12eb6deddcd3585bf6cd7337c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a291eb49c5a952ececabb64aa64907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae7133ebc4c4d84fe344ad6fd4b4c72.png)
![](https://img.xkw.com/dksih/QBM/2023/11/13/3367171691675648/3368455133519872/STEM/e3c066027601461b9f8e8ca1fd877a92.png?resizew=213)
(1)求线段EF的长度;
(2)求直线AD 与直线EF夹角的余弦值.
您最近一年使用:0次
9 . 在平行六面体
中,
,
,E为线段
上更靠近
的三等分点
(1)用向量
,
,
表示向量
;
(2)求
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955144ad06e949aecfdd08e629bd63ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431ed9c5d2a52c6df5dbdd6693afc803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d507cbc45fbda1630807543d4e038bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8a62b00067eaad13a3204ad6e4b1c8.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b565fa9e5be94375bf1a973797f091d.png)
您最近一年使用:0次
2023-11-10更新
|
189次组卷
|
4卷引用:江西省赣州市十八县二十三校2023-2024学年高二上学期期中联考数学试题
江西省赣州市十八县二十三校2023-2024学年高二上学期期中联考数学试题福建省泉州市安溪县2023-2024学年高二上学期11月期中考试数学试题四川省绵阳市南山中学实验学校2023-2024学年高二上学期期末模拟数学试题(五)(已下线)专题11 空间向量及其运算10种常见考法归类(3)
10 . 下列说法正确的是( )
A.![]() |
B.若![]() ![]() |
C.对空间任意一点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.“![]() ![]() ![]() |
您最近一年使用:0次
2023-11-06更新
|
338次组卷
|
2卷引用:江西省新余市实验中学2023-2024学年高二上学期期中考试数学试题