设
是
的垂心,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df39658ddab4476265e2595cb9e8d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc73f272c55aaee0daf950efe0f4fb37.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-22 08:12:22
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相似题推荐
单选题
|
适中
(0.65)
名校
解题方法
【推荐1】M为△ABC所在平面内一点,且
,则动点M的轨迹必通过△ABC的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0f026d0773c68a71f5e148759aa45a.png)
A.垂心 | B.内心 | C.外心 | D.重心 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】在四边形
中,
,
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b80ec548625badf9967afe49fd5871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be919d72a83e0978c6411bb24902d6c7.png)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐1】已知
内的一点M满足
,则向量
与向量
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2393efc717ed733aed46e27d1a932d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a029939904bc4849eec46169ee8d09.png)
A.30° | B.45° |
C.60° | D.90° |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】在平面直角坐标系中,已知O是坐标原点,A(3,0),B(0,3),C(cosα,sinα),若|
+
|=
,α∈(0,π),则
与
的夹角为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30382cce279b87a86455e7319445ba27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91a657b3f200fa520278c58fb19d2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca5600300ad2b526538e0081a31c568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674918a386df23ed8af983fbaefed339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91a657b3f200fa520278c58fb19d2eb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次