名校
1 . 如图,设
是平面内相交成
角的两条数轴,
分别是与
轴、
轴正方向同向的单位向量.若向量
,则把有序数对
叫做向量
在坐标系
中的坐标. 设
,
的模长;
(2)设
,若
,求实数
的值;
(3)若
,
,有同学认为“
”的充要条件是“
”,你认为是否正确?若正确,请给出证明,若不正确,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.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/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a9e1eb4c3226489d1344321b10b7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63170600a805dd2b82b9cd1fccc5544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b39413539656b05f7f5ec6e3fe0b0a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9928e3f6928af88e60db19712a9bef1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8411e25e7de74e20db1ad1af2346a6ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c6df0e911ac8dcc3fdfe1748871d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f68028c7d5a33d52a206bfa03f0ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4876efa91f38d11ce12fed2e1fbf2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da3ff6f17be99ec311610efa08ba002.png)
您最近一年使用:0次
2024-04-24更新
|
335次组卷
|
3卷引用:高一下期末考前押题卷01-期末考点大串讲(人教B版2019)
(已下线)高一下期末考前押题卷01-期末考点大串讲(人教B版2019)四川省阆中中学校2023-2024学年高一下学期4月期中学习质量检测数学试题四川省阆中中学校2023-2024学年高一下学期期中考试数学试题
名校
解题方法
2 . 记
的内角A,B,C的对边分别为a,b,c,且
.
(1)求
;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59dd5d16634095a9c049326f3ccaf53.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07112e0ab2a3cb93f290781a5a06d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac51e933a645811a2dddc63915eeb34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-07-01更新
|
233次组卷
|
2卷引用:陕西师范大学附属中学2022-2023学年高二下学期期末文科数学试题
3 . 已知
,
是夹角为
的单位向量,设
.
(1)求
;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b28baf17059c56ee9ad1ae4814acd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b04618e5b2db68f2de6ba68972c505c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a83a3d86cb55811d6641b41dad8e9b6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4befc39ebf44d014c7d8b3f09014555c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3899f081f757787510f10c0cae7d0bc6.png)
您最近一年使用:0次
解题方法
4 . 已知平面四边形ABCD中,
,
,向量
,
的夹角为
.
(1)求证:
;
(2)点E在线段BC上,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93313b21ed3170e61dba7953c8c77435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064d35d41ab2d316b9b3a5edf91a7542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd98a891fa65f2fc6688001b03185d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f800578f574789d1e136fdab9cc8343.png)
(2)点E在线段BC上,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8bcec03f051757bb3f98b0ba4fba1eb.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,在△ABC中
,点E是CD的中点,AE与BC相交于F,设
,
.
,
表示
,
;
(2)若在平面直角坐标系xOy中,已知点
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fa5a663651281f2d861a5534d8f229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac265febbf99dccf51aa0a2253e61f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18663288c2245e1febaa003e3b58f56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd0cecf5c102254b9755e42a80c3948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2cf03ac7a1b0aba75daa3b9f9b5768.png)
(2)若在平面直角坐标系xOy中,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e663465f4417c400e326bd39f1a9a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3d703807fcce95b364c972069f0c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f01810ea2bbf1062ef7806c46545063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f8340f920decb68b1c4a1fa99488c8.png)
您最近一年使用:0次
2022-07-10更新
|
2760次组卷
|
10卷引用:湖北省部分市州2021-2022学年高一下学期7月期末联考数学试题
湖北省部分市州2021-2022学年高一下学期7月期末联考数学试题辽宁省沈阳市东北育才学校科学高中部2022-2023学年高一上学期期末数学试题(已下线)第09讲 平面向量加、减、数乘运算的坐标表示北京市通州区运河中学2022-2023学年高一下学期3月月考数学试题(已下线)期末专题04 平面向量大题综合-【备战期末必刷真题】湖北省黄冈市黄梅国际育才高级中学2022-2023学年高一下学期5月月考数学试题专题02平面向量基本定理与平面向量的坐标表示(已下线)高一下学期期中复习解答题压轴题十八大题型专练(1)-举一反三系列(人教A版2019必修第二册)辽宁省重点中学沈阳市郊联体2023-2024学年高一下学期4月联考数学试题(已下线)高一下学期期末复习解答题压轴题二十四大题型专练(1)-举一反三系列(人教A版2019必修第二册)
名校
解题方法
6 . 如图,在
中,
,
为
中点,
为
上一点,且满足
,
的面积为
,
的值;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c7bd488e495e849225b83396c14a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596f68ba4b746cab4b2c26ffce554b5a.png)
您最近一年使用:0次
2023-03-19更新
|
1222次组卷
|
6卷引用:上海市杨浦高级中学2022-2023学年高一下学期期末数学试题
上海市杨浦高级中学2022-2023学年高一下学期期末数学试题上海市延安中学2020-2021学年高二上学期期中数学试题天津市第四十五中学2022-2023学年高一下学期第一次月考数学试题福建省厦门第一中学2022-2023学年高一下学期期中考试数学试题(已下线)高一下册数学期中模拟卷(一)(已下线)8.3 向量的坐标表示-同步精品课堂(沪教版2020必修第二册)
名校
解题方法
7 . 如图,在直角梯形
中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981274494746624/2982638491312128/STEM/277707cf-9511-4ed9-a2fc-1921f3e830fd.png?resizew=187)
(1)若
,求
;
(2)若
,求
在
上的投影向量的模长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f322f8f148fbbaa38b6c0218ae68fe.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981274494746624/2982638491312128/STEM/277707cf-9511-4ed9-a2fc-1921f3e830fd.png?resizew=187)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1064febe4e68fa2a5dccc0e7e6d75f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a579833964a06b5d103a1176e91325.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8845fadc307f1d308410e829becedd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2cf03ac7a1b0aba75daa3b9f9b5768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
您最近一年使用:0次
2022-05-19更新
|
426次组卷
|
2卷引用:黑龙江省牡丹江市第三高级中学2021-2022学年高一下学期期末数学试题
名校
解题方法
8 . 如图,在
中,
,
.点D在边BC上,且
.
,
,求
;
(2)
,AD恰为BC边上的高,求角A;
(3)
,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb89e4f1d401020adebdbfed22a3c855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3129ddd2ea97fd010b9e0b644225da8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d09196d6643e64ab5b9b5df02d98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045fab982486b0dbb57969a7546759f7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81d46247b6c57774da6fd0a804e679.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
您最近一年使用:0次
2022-04-25更新
|
1044次组卷
|
7卷引用:安徽省蚌埠市2022-2023学年高一下学期期末学业水平监测数学试题
安徽省蚌埠市2022-2023学年高一下学期期末学业水平监测数学试题上海交通大学附属中学2021-2022学年高一下学期期中数学试题(已下线)重难点01平面向量的实际应用与新定义(1)(已下线)专题6.7 平面向量的综合应用大题专项训练-举一反三系列(已下线)第9章 平面向量 章末检测卷-重难点突破及混淆易错规避(苏教版2019必修第二册)(已下线)高一下学期期中复习解答题压轴题十八大题型专练(1)-举一反三系列(人教A版2019必修第二册)(已下线)高一下学期期末复习解答题压轴题二十四大题型专练(1)-举一反三系列(人教A版2019必修第二册)
解题方法
9 . 如图,某公园内有一个很大的湖,湖岸边(可视湖岸为直线)点
处停放着一只景区观光船,由于缆绳突然断开,观光船受风力的影响,以与湖岸成
角的方向(假设方向一直不变),大小为
km/h的速度向湖中心飘走.半小时后,公园管理员才发现,此时观光船已经运动到点
的位置.假设沿湖岸从左向右的单位向量为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/229f7a80-9dd8-4652-a059-13906741d12f.png?resizew=143)
(1)求小船运动的位移向量
在向量
上的投影向量
(用已知向量表示)及其模长;
(2)公园管理员此时正在投影向量的终点
处,他立即开电动皮划艇前去追赶,假设电动皮划艇的速度大小为
km/h,且不受风力影响,请你帮他算一算,他应该按怎样的方向去追才能最快追上观光船?最少用时多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3598b267a362446bdec58695f55575fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc834704b32cb59df273e9b4c7847fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/229f7a80-9dd8-4652-a059-13906741d12f.png?resizew=143)
(1)求小船运动的位移向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
(2)公园管理员此时正在投影向量的终点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b323777ce06a9dec58197d36e5bfd3.png)
您最近一年使用:0次
20-21高一下·浙江·期末
名校
10 . 如图,在平行四边形
中,已知
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/82babed3-c7cd-4464-b26f-0b8377188e58.png?resizew=178)
(1)若
,求m,n的值和向量
的模长;
(2)求
和
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6b76b84f59139b6b11f010498b2bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db4890cd6b12a71aed8545616eb9d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82b6e0e0f98101a16ff516b4e4a76aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745ff827a6118373c4c1ca7276c8e64c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/82babed3-c7cd-4464-b26f-0b8377188e58.png?resizew=178)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6327c30d4697fc341a77d544f9b2b2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5a51e65e9b56a9970de33ead263a9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5a51e65e9b56a9970de33ead263a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
您最近一年使用:0次
2021-06-12更新
|
524次组卷
|
4卷引用:【新东方】双师313高一下