如图,在四棱锥P﹣ABCD中,底面是矩形,且AD=2,AB=PA=1,
平面ABCD,E,F分别是线段AB,BC的中点.
;
(2)求四棱锥P﹣ABCD的表面积;
(3)求直线PE与平面PFD所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb2fbbce7207d2b2bdd5c5ab61ecd04.png)
(2)求四棱锥P﹣ABCD的表面积;
(3)求直线PE与平面PFD所成角的大小.
21-22高二上·上海浦东新·期中 查看更多[7]
上海市进才中学2021-2022学年高二上学期期中数学试题(已下线)上海高二上学期期中【易错、好题、压轴60题考点专练】(2)上海市华东师范大学第三附属中学2021-2022学年高二上学期12月月考数学试题(已下线)10.3 直线与平面所成的角 (第4课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020必修第三册)上海市崇明中学2023届高三下学期第一阶段练习数学试题(已下线)第11章 简单几何体(压轴必刷30题专项训练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)期中真题必刷压轴50题专练-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)
更新时间:2022-11-20 22:39:11
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【推荐1】如图所示,在正方体
中,点
在棱
上,且
,点
、
、
分别是棱
、
、
的中点,
为线段
上一点,
.
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(1)若平面
交平面
于直线
,求证:
;
(2)若直线
平面
,
①求三棱锥
的表面积;
②试作出平面
与正方体
各个面的交线,并写出作图步骤,保留作图痕迹设平面
与棱
交于点
,求三棱锥
的体积.
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(1)若平面
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(2)若直线
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①求三棱锥
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②试作出平面
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【推荐2】如图,
是底面边长为2,高为
的正三棱柱,经过
的截面与上底面相交于
, 设
.
(1)证明:
;
(2)当
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内的正投影
(说明作法及理由),并求四棱锥
表面积.
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(1)证明:
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(2)当
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【推荐1】如图,在四棱锥
中,
为正三角形,底面
为直角梯形,
,
,
,
,点
,
分别在线段
和
上,且
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712433026957312/2714531730808832/STEM/4be0e502efcf4729bdaf3d639afa2857.png?resizew=183)
(1)求证:
平面
;
(2)设二面角
为
.若
,求直线
与平面
所成角的正弦值.
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(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19129982fd8389238b303e091bd94c1.png)
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(2)设二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c911b404bbb8f8d5f1470585fa31ad97.png)
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【推荐2】如图,
是
的直径,动点P在
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上的动点C,
,D是
的中点,
与
交于点E,F是
上的一个点.
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(Ⅰ)若
平面
,求
的值;
(Ⅱ)若
,求
与平面
所成角的正弦值.
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(Ⅰ)若
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(Ⅱ)若
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【推荐1】如图,在三棱柱
中,
,
,E,F分别为
,
的中点,且EF⊥平面
.
(2)若
,且
的面积
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b45b3bcea638fc84e8fe6d6b1b5317e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e56c43b15982d6db10a221fcba6ee5.png)
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【推荐2】在三棱台
中,
,
, 侧面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c93878e0291b61da2f432feadb70b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/98cf9ec8-5dad-41b5-b63d-78d595ec1fcf.png?resizew=162)
(1)求证:
平面
;
(2)求证:
是直角三角形;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0543f5a584b4b6e4714a467a104c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973bc82f603ff7b3ab28bd238fbe8c13.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c93878e0291b61da2f432feadb70b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/98cf9ec8-5dad-41b5-b63d-78d595ec1fcf.png?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5f9ef971747d2d5bbc5823797a7a65.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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