如图,在平行四边形ABCD中,
,
,
,沿对角线BD将△ABD折起到△PBD的位置,使得平面PBD⊥平面BCD,连接PC,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/b8e4fb02-ec31-4a7d-bfa1-e30102b727ae.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/b8e4fb02-ec31-4a7d-bfa1-e30102b727ae.png?resizew=184)
A.平面PCD⊥平面PBD |
B.三棱锥![]() ![]() |
C.PD与平面PBC所成角的正弦值为![]() |
D.若点M在线段PD上(包含端点),则△BCM面积的最小值为![]() |
22-23高二上·广东湛江·期末 查看更多[2]
更新时间:2023-02-11 12:28:40
|
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