已知向量
与
是非零向量,且满足
在
上的投影为
,
,则
与
的夹角余弦值为( )
![](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/3143307ad0ba4a631eac04e814993655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f1ca48b024b9ea5dc5a2f708967dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c5090e792f2bc5057182bd97eb5508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-20 10:44:08
|
相似题推荐
单选题
|
适中
(0.65)
名校
解题方法
【推荐1】在边长为1的正六边形
中,点P为其内部或边界上一点,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69a13d6f74ed890ab4722bd846dde64.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐2】
外接圆的半径为
,圆心为
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb15593fc085b9e67c626dc491485124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b66e9b2678ecb3dcc958a5d42a374b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐1】已知
,则
与
的夹角是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494b33901ca3efc28409e897428a1848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3143307ad0ba4a631eac04e814993655.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】下列选项中说法正确的是( )
A.命题“![]() ![]() |
B.若向量![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.“![]() ![]() ![]() ![]() |
您最近一年使用:0次