名校
解题方法
1 . 已知平面向量
的夹角为
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116e2e7116a7b5cd0a912ec0699ca017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a579077a9406b1c50546b9d3edb00285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62f23d1c78d7f8db8621b0e13022dd8.png)
A.4 | B.2 | C.1 | D.![]() |
您最近一年使用:0次
2021-11-21更新
|
1179次组卷
|
7卷引用:2023年2月安徽省普通高中学业水平考试数学模拟试题(三)
2 . 如图,菱形
的对角线
和
相交于点
,则下列结论中错误的是( )
![](https://img.xkw.com/dksih/QBM/2020/10/23/2577289414074368/2577790868103168/STEM/c754ed8acfc74e949f12a7a01d81dc12.png?resizew=115)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2020/10/23/2577289414074368/2577790868103168/STEM/c754ed8acfc74e949f12a7a01d81dc12.png?resizew=115)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次