已知平面向量
,
的夹角为
,
,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deae5171eb718a10261d9b632aa7c2ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcb140aa73fbe827043dca511ea1335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c0d5eddd52b3af8eac8ab53ddd18a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f333fd6530f99c4426c36a7402ea75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4284086d057f865089d022490f2db5f.png)
更新时间:2019-01-28 10:35:52
|
相似题推荐
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐1】已知向量
,满足
,
,
与
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6cc8bc856889653c9d4a389bd2a2a9.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662917aedec92809a13618093c8e0c3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad6ec2683a504c57cd7dda161e40617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a09169ea865c0e80aa24fc30ec0dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7a1df960feef63dec4790d63f52279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad1b0a76a887783392268ae203ad22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6cc8bc856889653c9d4a389bd2a2a9.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】若
,
,
与
的夹角为60°,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122f18a462c1aa305203b71c105f9d65.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad6ec2683a504c57cd7dda161e40617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/523bbf46e2350c9340654672414df3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7a1df960feef63dec4790d63f52279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122f18a462c1aa305203b71c105f9d65.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
【推荐3】平面向量
与
的夹角为
,
,
,则
等于________
![](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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67d605099f257500cd90294797f8df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0212ab68627919b1d22ac348a3e849.png)
您最近一年使用:0次