已知正三角形
的边长为
,点
在边
上,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/5a2f5a5731b0b62ac8b7cdc16aa92dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
2021·上海青浦·二模 查看更多[3]
更新时间:2021-05-05 09:28:02
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容易
(0.94)
【推荐2】在平行四边形ABCD中,
,
,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e4d2bcf4cdaab2a07ddf3640bb7ffa.png)
_______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6898d181faf9e6cc9957f3102f8d3d73.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bfa9415b1c3c5b225f93e5c064f8091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9e6b43dd3c986fa138747052927dbd.png)
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您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
解题方法
【推荐1】已知向量
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e47315c53c61d888744377e45fc50c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb76c2f69a06ccb041399ff1358c462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce986207a1107cec887371d8819db6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e47315c53c61d888744377e45fc50c.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
解题方法
【推荐2】若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9afc7bfbc67ff08ae5380508d9ca746.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4244dd3d11b8c8131ffecd896c12a27c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b72494c40e9c7afffd5238fd53e2e3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a51465a3e80bbf36709827b092df820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9afc7bfbc67ff08ae5380508d9ca746.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
名校
解题方法
【推荐2】已知向量
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9afc7bfbc67ff08ae5380508d9ca746.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdcb561d339df81ad295120a147a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9afc7bfbc67ff08ae5380508d9ca746.png)
您最近一年使用:0次