已知向量
,则向量
在向量
上的投影向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df252d750cd180949fb7973c4720343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2024·河南·二模 查看更多[2]
更新时间:2024-06-07 15:32:33
|
【知识点】 求投影向量
相似题推荐
单选题
|
较易
(0.85)
【推荐1】已知平面向量
,
.对于下列结论:①与
共线的单位向量为
;②向量
与
的夹角为锐角;③
在
上的投影向量为
;④
在
上的投影向量为
.其中所有正确结论的编号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec4b5b808b3ef48b35feb3a95b37224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da45c319a8a244ef2410916d2d50c5ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f590cde2f1fdca2b24aa0bf2df4b686a.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/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12aaad522dea2624abcd44eab01ff96e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeedfe06363c256f8fb8ecefb5eb84e.png)
A.①②④ | B.②④ | C.②③ | D.①③ |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】已知
,
,当
与
的夹角为
时,
在
上的投影向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f49431d1c4a3a42b426c3d55b95949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f744c4442e4294dc9e8a7a35cf0243ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次