名校
1 . 已知向量
,若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d74914db1991eca38c4d2d32bc09738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1f221b34610847ec3b08a039dd13b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30195fdef66f863248e03a26b3338134.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-11-18更新
|
601次组卷
|
4卷引用:山东省济南市历城第二中学2019届高三11月月考数学(文)试题
名校
2 . 已知
是锐角,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
,且
,则
为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e514bc1761deff47d27c1909c1906ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ae6c75a49dac6d963f68dc5881b85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3854a1870df3dfab871bb1b15d41cb07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e514bc1761deff47d27c1909c1906ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2018-10-07更新
|
1112次组卷
|
4卷引用:安徽省屯溪第一中学2018-2019学年高二上学期开学考试数学(理)试题
解题方法
3 . 在锐角
中,
分别是角
所对的边,已知
,且
//
.
(1)求角
的大小;
(2)记
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae950ee9b2d6db74a535956548bb6f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4478fcaef66e8a6a96925ce12d0f8e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5186ca272d0cbf0ee500e4a1dce008.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61895b8382156ce1df0825171f7afc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2b9f4a56eddb8729daedaa14205852.png)
您最近一年使用:0次
10-11高一下·黑龙江大庆·期中
名校
4 . 已知
,
,若
与
的夹角
为钝角,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f443141708d1dec879428bdfe7b5ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5fb215aed36f9b66cf55214409292f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-10-09更新
|
4353次组卷
|
20卷引用:山东省济宁市嘉祥县第一中学2019-2020学年高一6月月考数学试题
山东省济宁市嘉祥县第一中学2019-2020学年高一6月月考数学试题(已下线)2010-2011年黑龙江省大庆中学高一下学期期中考试数学(已下线)2012-2013学年山西省大同市实验中学高一下学期期中考试数学试卷(已下线)2018年5月28日 平面向量的数量积——《每日一题》2017-2018学年高二文科数学(已下线)2019年5月19日《每日一题》(文科)—— 每周一测安徽省涡阳第一中学2018-2019学年高一下学期第二次质量检测数学(理)试题湖南省怀化市2018-2019学年高一下学期期末数学试题江苏省海安高级中学2019-2020学年高二上学期入学考试数学试题人教A版 必杀技 第二章 平面向量 2.4.2 平面向量数量积的坐标表示、模、夹角上海市松江区松江二中2017-2018学年高二上学期第一次月考数学试题上海市三林中学2017-2018学年高二上学期第一阶段考试数学试题(已下线)上海市位育中学2014-2015学年高二上学期期中数学试题人教A版(2019) 必修第二册 必杀技 第6章 6.3.5 平面向量数量积的坐标表示内蒙古北京八中乌兰察布分校2019-2020学年高一下学期期末考试数学试题云南省昭通市绥江县第一中学2019-2020学年高一下学期第一次月考数学试题(已下线)6.3平面向量基本定理及坐标表示A卷陕西省西安交通大学附属中学2022届高三下学期全真模拟(一)理科数学试题河南省濮阳市第一高级中学2021-2022学年高一下学期期中质量检测文科数学试题(B卷)辽宁省沈阳市市级重点高中联合体2021-2022学年高一下学期期中考试数学测试题黑龙江省大庆市大庆铁人中学2022-2023学年高一下学期期中数学试题
5 . 已知向量
,
,若
与
平行,则实数
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7bef397316d8a0e571691fec72898c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01216466ba4bb74d7f71b399d2280e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614b003a9f14fed694128f681b2f1d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b46f373c22e2d00b8fbfb5b3f727f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
6 .
中,内角
所对边分别为
、
、
,
,
为
边上靠近
点的三等分点.记向量
,
,且
.
(1)求线段
的长;
(2)设
,
,若存在正实数
,使向量
与向量
垂直,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0230fe9e61bb9fece11b5266efa8d85f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0027b05ca76e2aefc443555e41f1bf6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333f6452df588782b9f5beed242e6d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb83fac351156d4447cdca7cbd07c194.png)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8e07385aa1fbc7ca745057b184c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cea383723cb8f589e023393e1728c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09737e117adb481fd3c4affdf38ff45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dd96524d683e4d42bf61628f85f078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d94ca336c6cea51db75aca9289a7f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015d532d41a2a70635052b1cf1840de7.png)
您最近一年使用:0次
名校
解题方法
7 . 已知向量
,
,若
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779d3b960e7c55f1eb8182e21f16bd4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64b25f903e3287dd5a16982c34a4e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca5180b88997a9353e3a35341285d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-04-12更新
|
554次组卷
|
7卷引用:山东省桓台第二中学2018届高三4月月考数学(文)试题
8 . 已知向量
.
(1)当
时,求
的值;
(2)当
时,
(
为实数),且
,试求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17b5bb0c9603d8b09c7f5215cc9749d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70facc9bc02af0867d248407bd317c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754b57d166e17509b604a51195a85f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dec9300f64d627e5d7111b9a8facd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09737e117adb481fd3c4affdf38ff45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b39500ead6dba7eba9a4677d3d9acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c42b7e18163df2808941d4bfad74ae.png)
您最近一年使用:0次
9 .
中,内角
所对的边分别为
、
、
,
,
为
边上靠近
点的三等分点.记向量
,
,且
.
(1)求线段
的长;
(2)设
,
,若存在正实数
,
,使向量
与向量
垂直,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0230fe9e61bb9fece11b5266efa8d85f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0760d5e139701f48d8a6d1d442824dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012d0e3919b01674615e173c7fe6853e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998e1fa7f8a53cfac657461bb3b5d572.png)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9acf097256577c43c8a4ab4402e0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96de5c968f6ece11bbec59a1796c03f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238702f83ef6bdfee0fdc2fd84f026f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1959b08c792b9b778a024dcf3f663740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015d532d41a2a70635052b1cf1840de7.png)
您最近一年使用:0次
解题方法
10 . 已知向量
,
,
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8769d7bf2001355155359c70d8566.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d860aad65132578baa378cbf984ae57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524eb15cdd12d7b89469901422740abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4eb75f30b603667a1f9ec99fd5907be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fde8e39a2679babf24eb124ddda20ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b6fc7e4e457a179af628d22d7b1dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8769d7bf2001355155359c70d8566.png)
您最近一年使用:0次