已知向量
的夹角为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a035c8861e9fa9369d20d6b531d88dc.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145a7e8f352fab613b773dc6639b508b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b113dc271cf51b3018bd1de14edf73ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a035c8861e9fa9369d20d6b531d88dc.png)
更新时间:2022-11-28 12:50:26
|
相似题推荐
填空题-单空题
|
较易
(0.85)
名校
【推荐1】已知向量
、
的夹角为
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338189ec20d1ec7fdbbc189d209428dd.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0ae443a505d263c44a3d7515fd0170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b3ce34179a54c5ee822888c169395e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338189ec20d1ec7fdbbc189d209428dd.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐3】已知
是边长为1的等边三角形,点O是
所在平面上的任意一点,则向量
的模为__________ .
![](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/8c136be1307ee4ff34ea4dd23170158d.png)
您最近一年使用:0次
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6598f1636cc621dfb0fdf2c79cad45.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6598f1636cc621dfb0fdf2c79cad45.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】已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1f416b02b80f2e5b846c7afaa689ff.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8f50eb3241d9261b4bf08faa0daef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1f416b02b80f2e5b846c7afaa689ff.png)
您最近一年使用:0次