解题方法
1 . 如图所示,向量
,
在一条直线上,且
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc5343d0ed7b449971c7ba787a621fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5960fe3e9c56c7aaffc6129ac387a59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/7a9ec314-da8d-4106-b20f-27bdc327d91e.png?resizew=182)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图所示,在凸四边形
中,对边
,
的延长线交于点
,对边
,
的延长线交于点
,若
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a06e9bf0330c7d082c5aa71644b7a71.png)
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/9fabd7cb-0446-42fd-9b4c-516ad8852196.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b129ee27e7505cb3bf4737520eac230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0e39eaa742baee757a566959201f15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a06e9bf0330c7d082c5aa71644b7a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4fc721bdfa6f2994a9e7d7b75ae6ad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/9fabd7cb-0446-42fd-9b4c-516ad8852196.png?resizew=167)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
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2023-08-10更新
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4卷引用:福建省泉州科技中学2022-2023学年高一下学期期中考试数学试题
福建省泉州科技中学2022-2023学年高一下学期期中考试数学试题江西省赣州市第四中学2023-2024学年高二上学期开学考试数学试题(已下线)第六章 平面向量与复数 综合测试A(基础卷)(已下线)专题01 平面向量压轴题(2)-【常考压轴题】
名校
解题方法
3 . 在矩形
中,
,
,
是
的中点,
是
边上的三等分点(靠近点
),
与
交于点
.
(1)设
,
,请用
,
表示
和
;
(2)求
与
夹角的余弦值.
![](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/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.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/d5c3accb1b8a5479439beff4259660e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8c53645db602c72b00b599c2c0ff97.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c16ed731b0f6ff2d7423c5e3f83cccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbaeb91bfb21e7bb048e527d355b637c.png)
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2023-07-09更新
|
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2卷引用:福建省泉州市2022-2023学年高一下学期期末教学质量监测数学试题
名校
4 . 下列各组向量中,可以作为基底的是( )
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2023-07-02更新
|
404次组卷
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2卷引用:福建省永春第一中学2022-2023学年高一下学期期末考试数学试题
名校
解题方法
5 . 已知
中,
,
,
,点D在边BC上且满足
.
、
表示
,并求
;
(2)若点E为边AB中点,求
与
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cabcef1cee1213140371c499339864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0987a20a5648765bce6ae78a693106.png)
(2)若点E为边AB中点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0735144f6e24b6b32028ff14c17c1cec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
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2023-06-28更新
|
1090次组卷
|
4卷引用:福建省永春第一中学2022-2023学年高一下学期期末考试数学试题
福建省永春第一中学2022-2023学年高一下学期期末考试数学试题江苏省南京市六校联合体2022-2023学年高一下学期期末联考数学试题(已下线)模块三 专题4 大题分类练(平面向量)拔高能力练(苏教版)(已下线)模块一专题2《平面向量基本定理与坐标运算》A基础卷(苏教版)
解题方法
6 . 如图,在平行四边形ABCD中,
,E为DC上靠近D的三等分点,G为BC上靠近C的三等分点,且
恰为3∶5,若以A为原点,AC为x轴,AD为y轴,
,
为基底.
坐标;
(2)求
坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35333abd7f02d663d15251bc5cbbf921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1a616e5af5a82740c147568338f09e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5245a43a101e229f345c29e9899ef30.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f68e7137620cec7d9cc8e8905e5bca2.png)
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7 .
中,a,b,c分别是内角A,B,C的对边,O为其重心,
,
,
分别是边a,b,c上的高.若
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efe57aca2f76116c2f62fb6f224be26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ffb82aa1614cd1bc28940b1a7252fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a13393b5c809072cc7c6e4adc5f0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98008453bfd6b3469a0f8f954a1037f7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
8 . 在
中,
,
,点
是线段
上靠近点
的三等分点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69550d878381f6e8fb436e88638f070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8cc7ad21d1c6c66eaabe45a2e577dfb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 在平行四边形
中,
是
的中点,若
,则
( )
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2e3c10d73661a2a1426265d6f26d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
A.![]() | B.1 | C.![]() | D.2 |
您最近一年使用:0次
2023-04-05更新
|
374次组卷
|
13卷引用:福建省德化第一中学2022-2023学年高一下学期第一次月考数学试题
福建省德化第一中学2022-2023学年高一下学期第一次月考数学试题陕西省安康市2023届高三下学期二模文科数学试题陕西省安康市2023届高三下学期二模理科数学试题河南省实验中学2022-2023学年高一下学期第一次月考数学试题福建省永定第一中学2022-2023学年高一下学期第一次阶段考试数学试题(已下线)期中考试测试(基础)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)河北省石家庄市河北师范大学附属中学2022-2023学年高一下学期期中数学试题北京市人大附中2022-2023学年高一下学期期中模拟数学试题广西壮族自治区防城港市2023届高三下学期4月月考数学(文)试题(已下线)湖南省株洲市2023届高三下学期一模数学试题变式题1-5青海省西宁市2023届高三一模理科数学试题福建省三明市四地四校2022-2023学年高一下学期期中联考数学试题宁夏银川市三沙源上游学校2022-2023学年高一下学期期末考试数学试题
名校
解题方法
10 . 如图,在
中,点
在线段
上,且满足
,过点
的直线分别交直线
于不同的两点
,若
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/36b0d553-59f9-4288-8984-d070ed5defc3.png?resizew=163)
(1)
,求
的值;
(2)求证:
,并求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/f3e98264e7f5ef85a26f7102978bdf7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adaa82a6500e3a95a24168f7df243790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e203b7c9a6600e0272c58a23733490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57938380f3737453fa491a7b5e05464b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/36b0d553-59f9-4288-8984-d070ed5defc3.png?resizew=163)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f4dc371c018ba94de7d5cce5872e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65c234dc16bb2d88d6dbd493d7bebd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7caf4941cec03d0730041ba6bf7c14e.png)
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2023-04-03更新
|
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3卷引用:福建省泉州市三校(铭选中学、泉州九中、 侨光中学)2022-2023学年高一下学期期中联考数学试题
福建省泉州市三校(铭选中学、泉州九中、 侨光中学)2022-2023学年高一下学期期中联考数学试题湖北省仙桃中学2022-2023学年高一下学期第一次段考数学试题(已下线)专题05 平面向量基本定理-【寒假自学课】(苏教版2019)