设
为实数,若向量
,
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ef4988b025cdf296ea81d7ef05f404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb6e06a9deea9f51755b27320b44c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8483f73141a818e549c72c5ee8cb3fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.4 |
22-23高一下·江苏连云港·期中 查看更多[3]
更新时间:2023-09-25 20:48:42
|
【知识点】 由向量共线(平行)求参数解读
相似题推荐
单选题
|
容易
(0.94)
解题方法
【推荐1】若向量
,
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37353252b3892a3d5c6d58f7a5bf05f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b9c10afcf033262946f4f874455bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
A.-2 | B.2 | C.3 | D.-3 |
您最近一年使用:0次
单选题
|
容易
(0.94)
名校
【推荐2】已知向量
.若
,则向量
与向量
的夹角的余弦值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21468d47a9616cb0ed6d48ff903e3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3635eba39050c2ccf1c7e5acbb3925e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次