名校
解题方法
1 . 如图所示,已知直三棱柱
的所有棱长均相等,点
为
的中点,则
与
所成角的余弦值为_____________ .
![](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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/2020/12/16/2615422452654080/2634387678150656/STEM/4c4552800afa42f38353729ca4cd62a4.png?resizew=183)
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2 . 如图所示,正方形
所在的平面与等腰
所在的平面互相垂直,其中
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/742e42e4-9834-4f79-b9e0-e67617c83900.png?resizew=209)
(1)若
是线段
上的中点,求证:
平面
;
(2)
是线段
上的点,若
,设直线
与平面
所成角的大小为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10874721f904634ee405008610e13d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6222cf3b6a43dd5a708164b39b755d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/742e42e4-9834-4f79-b9e0-e67617c83900.png?resizew=209)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f7dd424c1184e0656dcdad0e8b6d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d6d8ea948f80350a06eb8b7a0bdb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac73bb000121f2548c43fd72f57e510.png)
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名校
解题方法
3 . 已知圆
,直线
.
(1)若直线
与圆
交于不同的两点
,当
时,求
的值;
(2)若
,
是直线
上的动点,过
作圆
的两条切线
,切点为
,探究:直线
是否过定点?若过定点,求出定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd40f44c911918ee3638eb1a24bb1bd9.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac51bffb8f476896081027b33f7ec25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e87937025a66487fa6bac61fa30ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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4 . 关于棱长为
的空间正四面体
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() | B.![]() ![]() ![]() |
C.四面体![]() ![]() | D.二面角![]() ![]() |
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名校
解题方法
5 . 如图在三棱柱
中,底面
是边长为2的等边三角形,D为AC中点.
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609021568974848/2615217421901824/STEM/efa7c388e06147398464a285796d5e2f.png?resizew=195)
(1)求证:
平面
;
(2)若四边形
是正方形,且
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609021568974848/2615217421901824/STEM/efa7c388e06147398464a285796d5e2f.png?resizew=195)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8b5a6dbcf05f572f83f51abf7d668c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b87fa2a14aae7935f19a28bae55ebd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
您最近一年使用:0次
2020-12-16更新
|
490次组卷
|
5卷引用:重庆市铁路中学校2020-2021学年高二上学期12月月考数学试题
名校
解题方法
6 . 已知正四棱柱
的底面边长为1,侧棱
,P为上底面正方形
内部及边上的动点,若
平面
,则线段
长度的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
您最近一年使用:0次
2020-12-16更新
|
401次组卷
|
2卷引用:重庆市铁路中学校2020-2021学年高二上学期12月月考数学试题
名校
解题方法
7 . 《九章算术》中,将底面为长方形且有一条侧棱与底面垂直的四棱锥称之为阳马,将四个面都为直角三角形的四面体称之为鳖臑.过阳马与底面垂直的侧棱和与该棱相对的棱的截面将阳马分为两个鳖臑,则一个鳖臑的所有四个面中相互垂直的面的对数是( )
A.1对 | B.2 对 | C.3对 | D.4对 |
您最近一年使用:0次
名校
解题方法
8 . 如图,圆
,点
为直线
上一动点,过点
引圆
的两条切线,切点分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c5557970-7d98-448b-8d4d-2b2b04c4d8fe.png?resizew=180)
(1)若
,求两条切线所在的直线方程;
(2)求直线AB的方程,并写出直线AB所经过的定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42103f88b80e7ef8bb12c7b839990a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce26989fb027f96bc5384b7317d68c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c5557970-7d98-448b-8d4d-2b2b04c4d8fe.png?resizew=180)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
(2)求直线AB的方程,并写出直线AB所经过的定点的坐标.
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2020-12-01更新
|
415次组卷
|
2卷引用:重庆市杨家坪中学2020-2021学年高二上学期半期数学试题
名校
9 . 若圆
的圆心在直线
上,且经过两圆
和
的交点,则圆
的圆心到直线
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09324568f2f3995b2f932e66ee5926ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cee69a06d648d720a04a1c32b14c963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06b41a8381f2d61ba0e89c4a123b464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f999bcdcdc1b9d56e0639cadd96dbd.png)
A.0 | B.![]() | C.2 | D.![]() |
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2020-11-08更新
|
806次组卷
|
7卷引用:重庆市育才中学2020-2021学年高二上学期10月月考数学试题
重庆市育才中学2020-2021学年高二上学期10月月考数学试题(已下线)2.3 圆与圆的位置关系-2021-2022学年高二数学尖子生同步培优题典(苏教版2019选择性必修第一册)(已下线)专题2.15 圆与圆的位置关系-重难点题型精讲-2022-2023学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)专题2.8 圆与圆的位置关系【七大题型】-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)江西省南昌市南昌县莲塘第二中学2023-2024学年高二上学期第一次月考数学试题(已下线)专题08 圆与圆的位置关系8种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(苏教版2019选择性必修第一册)(已下线)河南省信阳高级中学2020-2021学年高一下学期开学考试数学(理)试题
名校
10 . 公元前3世纪,古希腊数学家阿波罗尼斯(
)在《平面轨迹》一书中,曾研究了众多的平面轨迹问题,其中有如下结果:平面内到两定点距离之比等于已知数的动点轨迹为直线或圆.后世把这种圆称之为阿波罗尼斯圆.已知直角坐标系中
,
,
,且满足
,则点
的运动轨迹方程为____________ ,点
到直线
的最小距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f90860eaa4a40277eee307f360e41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f72078e306c9691625da1548ca0895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcaada7649455fbebcdbdbb9a94e6a1.png)
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2020-11-08更新
|
660次组卷
|
3卷引用:重庆市育才中学2020-2021学年高二上学期10月月考数学试题
重庆市育才中学2020-2021学年高二上学期10月月考数学试题人教A版(2019) 选修第一册 实战演练 第二章 课时练习17 圆的标准方程(已下线)专题9.2 直线与圆的位置关系(精练)-2021年新高考数学一轮复习学与练