1 . 已知向量
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efb50baf835b9a508875dbaa47bbde2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354a0cd35da8358b533250782b31bc34.png)
A.![]() | B.若![]() ![]() |
C.若![]() ![]() | D.![]() |
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名校
解题方法
2 . 如图,
是
的重心,
,
,
是边
上一点,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c8df1c05e4bd7e8af29480e8fc299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbf7a586967804fdecdf7bef885e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/3e394bb9-9411-424f-9559-cfd47484c575.png?resizew=156)
您最近一年使用:0次
2021-11-25更新
|
1230次组卷
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4卷引用:广东省汕头市澄海中学2021-2022学年高二上学期第二次学段考试数学试题
广东省汕头市澄海中学2021-2022学年高二上学期第二次学段考试数学试题吉林省东北师范大学附属中学2021-2022学年高三上学期第二次摸底考试文科数学试题(已下线)解密07 平面向量(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)(已下线)专题16 奔驰定理与四心问题-1
解题方法
3 . 已知
,
,
三点共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da927eda15e4af160175ce6136f0404e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567fc6dde8cea2eccafe83048ed9b650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5dd58aa5f4533762e56720d2431d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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解题方法
4 . 如图,△ABC中,D为AB中点,点F在线段CD上,设
,
,
,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852648714633216/2854626751528960/STEM/1e1ba77f-c74a-4879-9879-cf7f964e2145.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/bb90ef58bcb67a77b871b84b4df07b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7e12253044b5abff2a56dcd730ced8.png)
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852648714633216/2854626751528960/STEM/1e1ba77f-c74a-4879-9879-cf7f964e2145.png)
A.8 | B.9 |
C.![]() | D.![]() |
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解题方法
5 . 在直角
中,
M是BC中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d851c1570a352235580fec08f5e5e921.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b799b84b49bfef60a12b97eb12daade5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d851c1570a352235580fec08f5e5e921.png)
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6 . 已知PA,PB,PC是从点P出发的三条线段,每两条线段的夹角均为60°,
,
,
,点G为
的重心,即点G是
三条中线的交点,且
.
(1)求x,y,z的值;
(2)求点G到直线PA的距离,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc532cfe64300cb3da9e04a307c957a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8825d400f453c5c17a7beeb1cc9a9cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41b05e11ba5eadaaed9a224b949774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551e44d6b13e9eb65dc2c72ca526d4b0.png)
(1)求x,y,z的值;
(2)求点G到直线PA的距离,
您最近一年使用:0次
2021-11-14更新
|
85次组卷
|
3卷引用:广东省部分名校2021-2022学年高二上学期期中数学试题
名校
解题方法
7 . 已知向量
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43a5977d88d6e6711987af2aaf753c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc7d6415cc77b3522c16c2467863b9c.png)
A.当![]() ![]() ![]() | B.![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
2021-11-13更新
|
494次组卷
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7卷引用:广东省揭阳第一中学2020-2021学年高二下学期期中数学试题
名校
解题方法
8 . 在锐角三角形
中,角A,B,C的对边分别为a,b,c,已知
,向量
与
共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
________ ;
周长的取值范围是:___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916263b6d46a054760f930c15c3d3513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46d0f558a1b6d6f0a0d45e483d68a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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9 . 如图,在
中,
,其中
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2008b996728711d019c37519a327106e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9d566f44e2bbaa2624411fb697a92da.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
2021-11-13更新
|
836次组卷
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3卷引用:广东省仲元中学2021-2022学年高二上学期开学摸底数学试题
广东省仲元中学2021-2022学年高二上学期开学摸底数学试题(已下线)6.4.1-6.4.2 平面几何中的向量方法和向量在物理中的应用举例(分层练习)-同步精品课堂陕西省西安市第八十五中学2023-2024学年高一下学期第一次月考数学试题
名校
解题方法
10 . 如图,
是圆O的直径,C、D是圆O上的点,
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/ece7ea64-7c66-4dbf-b6ec-a629ffd53137.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3d77010b128adfd20ee25a3165993b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/ece7ea64-7c66-4dbf-b6ec-a629ffd53137.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-12更新
|
411次组卷
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2卷引用:广东省广州市二中2021-2022学年高二上学期期中数学试题