1 . 已知锐角
中,三个内角为A、B、C,两向量
,
.若
与
是共线向量.
(1)求
的大小;
(2)若
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43258703e1d42d6d9b30b6b373c14ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18c2c45b2290a8ec5fcdbd85e5b4220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4478fcaef66e8a6a96925ce12d0f8e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5186ca272d0cbf0ee500e4a1dce008.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbba49f7d60451dac65bbebc35bafa14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f511880834175ac4546ea7cc7758b1b0.png)
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2 . 已知向量
,
满足
,
.
(1)若
,求向量
的坐标;
(2)若
,求
与
的夹角
.
![](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/81c5293dfdbd72411423003ec100c910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e575931e53011aac1d85bc158ee972.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b958a367fa2f08b6202a5a6ebf5e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ea88dbf7054bcc0286f95fbfcb8aa9.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/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2023-07-11更新
|
554次组卷
|
3卷引用:黑龙江省佳木斯市第八中学2022届高三上学期期末数学(文)试题
名校
解题方法
3 . 已知平面四边形
满足
,平面内点
满足
,
与
交于点
,若
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37910f118a4341aa52405351d59a0444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac223ab35e9cd210bb0fe7046f341d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7dd1075848d5b721c8f6447da8bc479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-08更新
|
2124次组卷
|
6卷引用:江苏省南京东山外国语学校2022-2023学年高三上学期期末数学试题
江苏省南京东山外国语学校2022-2023学年高三上学期期末数学试题江苏省南京师范大学附属中学江宁分校等2校2022-2023学年高三上学期期末联考数学试题(已下线)专题6 平面向量及其应用(已下线)热点4-1 平面向量的概念、线性运算与基本定理(6题型+满分技巧+限时检测)(已下线)期末专项01 平面向量-期末高分必刷题型(人教A版2019必修第二册)河南省安阳市龙安高级中学2022-2023学年高一下学期3月月考数学试卷
名校
解题方法
4 . 已知向量
,若
,则实数m的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196983de831d6f1f1267bbdb5e6d9ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11aeda90bd9777fda412249a37fc7a08.png)
A.![]() | B.![]() | C.1 | D.4 |
您最近一年使用:0次
2023-02-07更新
|
1054次组卷
|
3卷引用:河北省沧州市2023届高三上学期12月教学质量监测调研数学试题
解题方法
5 . 已知平面向量
,若
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7037e7dec126bb58c00af2a9e7a752ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07db5ad67306361527abfd6b839057bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知两个平面向量
共线且方向相反,若
,
,则向量
的坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e4d15ab8f5359f6aa3b42674b0c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209172ae339b361ba6697d844931f53c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
您最近一年使用:0次
7 . 已知向量
,
,若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db1d382e5da13afd9e8d1f727499282b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc7267debe70f39212fc0439e811ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2558ead24d56fb372fef95c10fddd3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
8 . 已知等边
的边长为2,点D,E满足
,BD与CE交于点O,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273de30c1a79c6a24413eecd57435ed1.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知向量
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f53c38d8d8a5b6aa41347462ea4d1dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
2023-01-09更新
|
754次组卷
|
4卷引用:河北省张家口市2023届高三上学期期末数学试题
10 . 已知
,
,若
与
共线,则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795d0cb29eb3f18bdd1d88c7153f4ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f10f19de31c1f1e117cdffcef20584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.将![]() ![]() ![]() |
B.函数![]() ![]() |
C.直线![]() ![]() |
D.函数![]() ![]() |
您最近一年使用:0次