如图,已知正方体
的棱长为4,
是
的中点,若
,
,
,若
,则
面积的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7db03cfebdb92c00bb76c0e9593f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee72261f6901e62dfd0ffe547406544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e2e01346f60857ff635bb766802e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80cc064d914c1b4191d00f4b00032aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f955e5cc9f108de6f3ca01e5eb84c52e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/0490161b-ea19-470d-9102-79ad8bb3ba61.png?resizew=146)
A.4 | B.8 | C.![]() | D.![]() |
23-24高二上·重庆九龙坡·阶段练习 查看更多[2]
更新时间:2023-10-15 19:40:04
|
【知识点】 空间向量垂直的坐标表示
相似题推荐
单选题
|
适中
(0.65)
解题方法
【推荐1】在直三棱柱
中,底面是等腰直角三角形,
,侧棱
,D,E分别是
与
的中点,点E在平面ABD上的射影是
的重心G,则
与平面ABD所成角的余弦( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.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】在空间直角坐标系中,已知
,
,
,
,则直线AD与BC的位置关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a746c2759c06fd94b167fe63a22e64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097dfedac11cf601a7f5f6e91fe92177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2850ca96bd2f6ec3a66fbae0256e0e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d74f1796a08d726dfff2e60b66723b.png)
A.平行 | B.垂直 | C.相交但不垂直 | D.无法判定 |
您最近一年使用:0次