名校
1 . 已知为圆锥
底面圆
的直径,
,
,点
为圆
上异于
的一点,
为线段
上的动点(异于端点),则( )
A.直线![]() ![]() ![]() |
B.圆锥![]() ![]() |
C.棱长为![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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2023-12-02更新
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3卷引用:安徽省黄山市八校联盟2023-2024学年高二上学期期中考试数学试题
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2 . 如图,在斜三棱柱
中,点O.E分别是
、
的中点,
与
交于点F,
平![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/5a3da2c0-0cd1-4a8f-b6a3-17d53c472252.png?resizew=198)
(1)求证:
平面
;
(2)求
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/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3cc9cccfb4c260dac05f4ed57e8c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ba708880f5eb782acbf2c961c2494c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/5a3da2c0-0cd1-4a8f-b6a3-17d53c472252.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8550fbd7938e0d8639462ac52a6dad1f.png)
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3 . 在三棱锥
中,
平面
,
,
,
,
是边
上的一动点,且直线
与平面
所成角的最大值为
,则三棱锥
的外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb15541fa53381c9130217ccac69f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e713f0ba80e87438cf6273fb00cb81a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-05-21更新
|
588次组卷
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12卷引用:【全国百强校】安徽省黄山市屯溪第一中学2018-2019学年高二上学期期中考试数学(理)试题
【全国百强校】安徽省黄山市屯溪第一中学2018-2019学年高二上学期期中考试数学(理)试题山西省山西大学附属中学2018-2019学年高二上学期期中数学(理)试题山西省山西大学附属中学2018-2019学年高二上学期期中数学(文)试题【全国市级联】河南省洛阳市2018届高三第三次统一考试数学(理)试卷(已下线)2018年高考题及模拟题汇编 【理科】5.立体几何【全国百强校】山西省临汾第一中学2017-2018学年高二下学期期末考试数学(理)试题【全国百强校】湖南省长沙市长郡中学2019届高三下学期第六次月考数学(理)试题吉林省吉林市2020届高三第四次调研测试数学(理)试题山西省运城市景胜中学2020-2021学年高二上学期9月月考数学试题(已下线)专题4.3 立体几何的动态问题-玩转压轴题,进军满分之2021高考数学选择题填空题河南省郑州外国语学校2021-2022学年高三上学期调研考试三理科数学试题重点题型训练14:第6章 简单几何体的再认识-2020-2021学年北师大版(2019)高中数学必修第二册
解题方法
4 . 如图,在直三棱柱
中,
是
的中点.
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/982b0f98-9fba-4c3b-8d75-3ef8fa478177.png?resizew=137)
(Ⅰ)求直线
与平面
所成角的正弦值;
(Ⅱ)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/982b0f98-9fba-4c3b-8d75-3ef8fa478177.png?resizew=137)
(Ⅰ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(Ⅱ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91441b6a208013fa5e8ddf7c8cd1f43d.png)
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5 . 在四棱锥
中,底面ABCD是边长为3的正方形,
平面ABCD,且
,则PC与平面ABCD所成角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80786c00dd38c707bf4410a0e99df1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-12-30更新
|
339次组卷
|
3卷引用:【市级联考】安徽省黄山市2018-2019学年高二上学期期中考试数学(文)试题
名校
6 . 如图,正三棱锥
的底边长为3,其侧棱长为
,设D为PC的中点.
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096702953521152/2100935793516544/STEM/d836e2ecbe8044269131713d60c65fee.png?resizew=136)
求证:
;
求BD与底面ABC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e43f6eb62e48e72e06361138e0d1e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b3a099c4fbb7645f63e639ccf68ddc.png)
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096702953521152/2100935793516544/STEM/d836e2ecbe8044269131713d60c65fee.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f753c66e82980ba545b4ae340f45da4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7899981dbad3c551ca12ee946215db59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e349d07c0ae25a9d8bd29b3ce9d132.png)
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