已知平面向量
满足
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404067afb19bd74f447a6c0c832af1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8eafb341060b35ffaf7ec2c1e0f5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894314ca9ec64c711707bc6ddcf71033.png)
A.12 | B.4 |
C.![]() | D.2 |
更新时间:2023-11-02 23:06:23
|
相似题推荐
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】已知同一平面内非零向量
,下列结论中正确个数的为( )
①若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ce380bce6978d2acd0742bed4e98e6.png)
②若
,则
不能作为此平面内的一组基底
③若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
④若
,则
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ecfaf651f46c6915a3f463d67ec0e5c.png)
⑤
在
方向上的投影向量为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f057d8b12720e8841dad5cf78f1bf3ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9e602f8855225688f3c5f4c6a10d37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ce380bce6978d2acd0742bed4e98e6.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fc4cd72b89a33bf68aa756a0c8d013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3908e03d141b78d56043b00617f900e3.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480e7839b807ca5c0c6c4028eba6c00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42520c17641723a393ff87f0e7755a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ce380bce6978d2acd0742bed4e98e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ecfaf651f46c6915a3f463d67ec0e5c.png)
⑤
![](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/f057d8b12720e8841dad5cf78f1bf3ed.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】在
中,角
的对边分别为
,若
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dcae4e1e7cf6c9f2706fe46c0486e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20eba4fe361ec3c290a15465af0d3713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】已知向量
,
,且
,
,则
的最大值为( )
![](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/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9441d59d8cbe117c92f73a29c463d345.png)
A.1 | B.3 | C.7 | D.5 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐2】已知平面向量
与
的夹角为
,
,
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e708be069ecbfa5b18d36b40d0b8ccec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1a967c139cd07a874e9969c9b4f357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6ba33bce399a92ce3c30ccb7f25ec9.png)
A.![]() | B.2 | C.![]() | D.4 |
您最近一年使用:0次