1 . 如图,已知四边形
是边长为
的正方形,
底面
,
,设
是
的重心,
是
上的一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/a5ac92fb-1c89-4a78-afb7-a820510b79c2.png?resizew=150)
(1)试用基底
表示向量
;
(2)求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64568414c25073afaaaa2bb585d8470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a99eaeb83fb9a5ba74a9fc8f5fb18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002a3b0ffc896755f903da63e3989576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e453b7eb2496c9d8b4668034e7d16a72.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/a5ac92fb-1c89-4a78-afb7-a820510b79c2.png?resizew=150)
(1)试用基底
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1a8df2a6500d9efd065065547647db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587940d5c4389a63bd72228c64db77bc.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37911e56b9180699c76cc0eba7fe5c3.png)
您最近一年使用:0次
解题方法
2 . 如图,正方体
边长为1,
是线段
的中点,
是线段
上的动点,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/963da2cd-0de0-4cc5-bee1-cc295a06f2f9.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/963da2cd-0de0-4cc5-bee1-cc295a06f2f9.png?resizew=152)
A.![]() |
B.三棱锥![]() ![]() |
C.直线![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
3 . 如图,在直三棱柱
中,若
,则
=( )
![](https://img.xkw.com/dksih/QBM/2024/1/23/3417266435678208/3417520861880320/STEM/743bf32092f44d249b5ec9cbbc1a8ee6.png?resizew=116)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc393268b0aa0bb26c27a84d492825fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d63a6284e4361830a4f19c43e783c0.png)
![](https://img.xkw.com/dksih/QBM/2024/1/23/3417266435678208/3417520861880320/STEM/743bf32092f44d249b5ec9cbbc1a8ee6.png?resizew=116)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 如图①,在四面体
中,
是棱
上靠近点
的三等分点,
、
分别是
、
的中点.设
,
,
,
(1)用
,
,
表示
;
(2)若
,且
,
,
,以
为原点,
、
、
方向分别为
轴、
轴、
轴正方向建立空间直角坐标系如图②,过点
做平面
,使平面
的一个法向量为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/9bf2b77c-97cd-4873-a417-3561da42bcab.png?resizew=325)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d18e5adcfecb851b17655c1b92e578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b52dfb276d32f394717345df18f3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d6adb1944e97f196b672e54498d416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d37a17216b4d0da01ccb319840ee28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a024d854ec90da8b06f91562c9f9769e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2024-01-11更新
|
328次组卷
|
4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
5 . 如图,在四面体
中,
是棱
上靠近
的三等分点,
分别是
的中点,设
,
,
,用
,
,
表示
,则 ( )
![](https://img.xkw.com/dksih/QBM/2024/1/24/3418166278266880/3418286791098368/STEM/fb4583c6bf7846dbab774850b17f86dd.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518407c06c4c966f670ea9d2414984a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa87ac2b7d6a58f5aaee923d83f799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://img.xkw.com/dksih/QBM/2024/1/24/3418166278266880/3418286791098368/STEM/fb4583c6bf7846dbab774850b17f86dd.png?resizew=183)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-02-24更新
|
246次组卷
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3卷引用:江西省上饶市广丰区大千艺术学校2023-2024学年高二上学期期末数学试题
名校
6 . 在四棱锥
中,底面
是平行四边形,
是棱
上一点,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
___________ .
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0250d80679c912a611e1521229cf24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6aab790b71d05eb637c0dd0e78bf3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
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2023-12-31更新
|
328次组卷
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3卷引用:江西省部分学校2023-2024学年高二上学期1月期末数学试题
江西省部分学校2023-2024学年高二上学期1月期末数学试题(已下线)3.2 空间向量基本定理(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)安徽省江淮名校2023-2024学年高二上学期12月阶段性联考数学试题
名校
7 . 如图:三棱柱
中,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2023/12/29/3399611519729664/3399741726941184/STEM/4b0e1135c33b48b6b61fe94845d2d00d.png?resizew=128)
(1)求
的长;
(2)若点
是棱
所在直线上的点,设
,当
时,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae085a6e115d9519419db9f3ee18ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598031e9c32cc829c5181e685cf8bb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2023/12/29/3399611519729664/3399741726941184/STEM/4b0e1135c33b48b6b61fe94845d2d00d.png?resizew=128)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35850dbc661ded6456b70767cc6cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ba627416dad7af38eec520e2fcd70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/793bb46a1588d171bd14e5dccd729aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-12-29更新
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4卷引用:江西省上饶市北大邦实验学校2023-2024学年高二上学期期末质量检测数学试题
江西省上饶市北大邦实验学校2023-2024学年高二上学期期末质量检测数学试题(已下线)6.2 空间向量的坐标表示(3)(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点5 空间向量基底法综合训练【基础版】四川省成都市第十二中学2023-2024学年高二上学期第三学月月考(12月)数学试题
名校
8 . 如图,在三棱柱
中,
分别是
上的点,且
. 设
.
(1)试用
表示向量
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2743e10dd8bce468d1d397b3e9a550d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af780145a5df0957f4461780628a527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a09fe477818584028f82a09f1d19a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/e1404d91-8671-4371-9010-0cddfbd20ef4.png?resizew=180)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a014dff8997c661055229de29c61cfc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05008306cf536bf8537ce498b6fd84bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2023-12-27更新
|
509次组卷
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4卷引用:江西省上饶艺术学校2023-2024学年高二上学期期末数学试题
江西省上饶艺术学校2023-2024学年高二上学期期末数学试题山东省淄博市2023-2024学年高二上学期期末教学质量检测数学试题(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点3 空间向量基底法(三)【基础版】浙江省湖州市湖州中学2023-2024学年高二上学期第二次单元测试数学试题
名校
解题方法
9 . 如图,在三棱锥
中,
,点
在线段
上,且
,则直线
与直线
所成角的余弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c65156d88c8787bf697d6c4fd8f21e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0cf3de61b5492989ae2002e19de770a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2023/12/23/3395591015309312/3396069057093632/STEM/bf147f21eb464843ab74887eb976a6df.png?resizew=177)
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2023-12-24更新
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4卷引用:江西省景德镇市乐平中学2023-2024学年高二上学期期末数学试题