已知平面向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c839029a0cd4fec1d89363619b0cd10.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4514aca5083ee11c2debbe50a5aedf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd157a0813553e5ed987b44d867523d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1dbb7e42328bf47d1cf2aeb069512d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c839029a0cd4fec1d89363619b0cd10.png)
更新时间:2022-03-30 21:28:26
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相似题推荐
填空题-单空题
|
较易
(0.85)
解题方法
【推荐1】知向量
.若
,则单位向量
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179b3f7ee123de4a02741c081d97c9e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b037f57ac0585bcfd70c67323ab03bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c389e45e4bb8d9c5fb423cd3e8986f0c.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1】设向量
与
的夹角为
,定义
与
的“向量积”:
是一个向量,它的模
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bae85f8edfa6c707de9b0db6609ec57.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc11d170d9af305d1961166be479996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85070dbf0773e56dd1f2f0339351dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ffe7f0495d2b5749380244d645938c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42806b3fcf7cf839e19d7c03ffac5f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bae85f8edfa6c707de9b0db6609ec57.png)
您最近一年使用:0次
填空题-单空题
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较易
(0.85)
名校
【推荐2】已知向量
,
是不平行于
轴的单位向量,且
,则
=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3f5a708574ca78631988b5c00cae76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0987c94f2301a6f2d1897cc11b64ead4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
您最近一年使用:0次