名校
1 . 已知
是底面边长为1的正四棱柱,
为
与
的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/ce8661db-5735-4e0b-8871-25a8eb4b9655.png?resizew=172)
(1)设
与底面
所成角的大小为
异面直线
与
所成角的大小为
求证: ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5932db8195eab6c776d37f694aadc84.png)
(2)若点C到平面
的距离为
求正四棱柱
的高;
(3)在(2)的条件下,若平面
内存在点P满足P到线段BC的距离与到线段
的距离相等,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/ce8661db-5735-4e0b-8871-25a8eb4b9655.png?resizew=172)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2813b1870eb5c43664820f461a75b402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3544c836718677375096543237755954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5932db8195eab6c776d37f694aadc84.png)
(2)若点C到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39099f98d1a9d10cd0fb6692cb0c13cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(3)在(2)的条件下,若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcab96f97a5e202ba9220bac5280e4f3.png)
您最近一年使用:0次
2019-11-09更新
|
491次组卷
|
4卷引用:上海市向明中学2018-2019学年高二下学期期中数学试题
上海市向明中学2018-2019学年高二下学期期中数学试题上海市大同中学2022-2023学年高二上学期期中数学试题(已下线)高二 期中模拟卷(原版卷)(已下线)第二章 立体几何中的计算 专题二 空间距离 微点1 空间两点间的距离、点到直线的距离【培优版】
2019·江苏·一模
2 . 如图,已知正四棱柱
的底面边长为
,侧棱
,
是上底面正方形
的中心,
是侧棱
上一点.设异面直线
与
所成的角为
,且
.
(1)求线段
的长;
(2)若
是侧棱
的中点,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0424446817f60c18f8e4e3cc202ad99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ae4f86aad1e1dd4732591948ed75ab.png)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb10d645970e5860afd3430957fab6c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/520b3ddf-56e5-4537-a17e-5b1e029bfd1c.png?resizew=117)
您最近一年使用:0次