名校
解题方法
1 . 已知三棱柱
的侧棱与底面边长都相等,
在底面
内的射影为
的中心
,则
与底面
所成角的余弦值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-01更新
|
1292次组卷
|
6卷引用:四川省攀枝花市第十五中学2019-2020学年高二下学期期中考试数学(理科)试题
四川省攀枝花市第十五中学2019-2020学年高二下学期期中考试数学(理科)试题人教A版(2019) 必修第二册 突围者 第八章 综合拓展提升山东省济宁市邹城一中2019-2020学年高一数学下学期期中检测试题山东省博兴县第一中学2019-2020学年高一下学期开学检测数学试题人教A版(2019) 必修第二册 实战演练 第八章 验收检测(已下线)第8章 立体几何初步(单元基础卷)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)
2 . 如图,在四棱锥
中,侧面
是边长为6的正三角形,侧面
与矩形
所在平面垂直,
分别为侧棱
的中点,
为棱
上一点,且
,
.若平面
与
交于点
,则
与底面
所成角的正切值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/958f9d07-f2e6-4ce6-9ba5-60e38bea12a5.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930e85bc9f73e86cfb6ce9b076433f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868a98a5d6337c3dd9bca228e3545665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/958f9d07-f2e6-4ce6-9ba5-60e38bea12a5.png?resizew=184)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-23更新
|
511次组卷
|
3卷引用:2020届高三1月(考点07)(文科)-《新题速递·数学》
名校
解题方法
3 . 如图①,是由矩形
,
和
组成的一个平面图形,其中
,
,将其沿
折起使得
重合,连接
如图②.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/8442f118-fd70-4ab4-9377-212ae5a5bf0c.png?resizew=347)
(1)证明:平面
平面
;
(2)若
为线段
中点,求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f0ab7952483e00b97cb9d8d8e8edcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7269e2c199802cbddb99a6070d39d2fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4840aae24af2fb3f47eb96c99fbc8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f45c6b93a871dc4dd5e66a9bfdecd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b2085b833fb31b7e38cb16f1fce3ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/8442f118-fd70-4ab4-9377-212ae5a5bf0c.png?resizew=347)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7fb4bb4caccf79639a126064771da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2194add18a7df1a23cf1554dc2da1b40.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
您最近一年使用:0次
4 . 一个正方体的平面展开图如图所示.在该正方体中,给出如下3个命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e64af30c-eb1e-4b67-a63e-7b8cfe713b99.png?resizew=143)
①
; ②
与
是异面直线且夹角为60°; ③
与平面
所成的角为45°.
其中真命题的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e64af30c-eb1e-4b67-a63e-7b8cfe713b99.png?resizew=143)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb0769fddbe87139fcfd9c3d467976c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
其中真命题的个数是( )
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2020-02-18更新
|
286次组卷
|
4卷引用:四川省资阳市2019-2020学年高二上学期期末数学(理)试题
5 . 在
中,
,
是
的中点,
平面
,如果
、
与平面
成的角分别是30°和60°,那么
与平面
所成的角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.30° | B.45° | C.60° | D.75° |
您最近一年使用:0次
2020-02-16更新
|
235次组卷
|
3卷引用:四川省乐山市2019-2020学年高二上学期期末数学(文)试题
名校
解题方法
6 . 如图,在正方体
中,F是棱
上的动点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/6dd02a66-c0e5-4eec-8f5f-18f5ff881eec.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/6dd02a66-c0e5-4eec-8f5f-18f5ff881eec.png?resizew=156)
A.对任意动点F,在平面![]() ![]() |
B.对任意动点F,在平面![]() ![]() |
C.当点F从![]() ![]() ![]() ![]() |
D.当点F从![]() ![]() ![]() |
您最近一年使用:0次
2020-02-10更新
|
423次组卷
|
5卷引用:四川省广安市广安中学2019-2020学年高二9月月考(文)数学试题
四川省广安市广安中学2019-2020学年高二9月月考(文)数学试题北京市朝阳区2018-2019学年高一下学期期末数学试题河南省实验中学2019-2020学年高一上学期第二次月考数学试题黑龙江省哈尔滨市第六中学2019-2020学年高二上学期期中数学(理)试题(已下线)专题4.5 立体几何中探索性问题-玩转压轴题,进军满分之2021高考数学选择题填空题
7 . 如图,在正方体
中,点
为线段
的中点,设点
在线段
上,直线
与平面
所成的角为
,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/2020/2/4/2392012272967680/2392529067925504/STEM/cdf18a9fdf4243f0a425eb1972c2e48e.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
![](https://img.xkw.com/dksih/QBM/2020/2/4/2392012272967680/2392529067925504/STEM/cdf18a9fdf4243f0a425eb1972c2e48e.png?resizew=189)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-05更新
|
347次组卷
|
3卷引用:四川省自贡市2019-2020学年高二年级上学期期末文科数学试题
8 . 如图1,ABCD为菱形,∠ABC=60°,△PAB是边长为2的等边三角形,点M为AB的中点,将△PAB沿AB边折起,使平面PAB⊥平面ABCD,连接PC、PD,如图2,
![](https://img.xkw.com/dksih/QBM/2020/1/10/2374139253850112/2374934092824576/STEM/bb68959d-48fa-4e96-9181-d77cd8f8fa48.png)
(1)证明:AB⊥PC;
(2)求PD与平面ABCD所成角的正弦值
(3)在线段PD上是否存在点N,使得PB∥平面MNC?若存在,请找出N点的位置;若不存在,请说明理由
![](https://img.xkw.com/dksih/QBM/2020/1/10/2374139253850112/2374934092824576/STEM/bb68959d-48fa-4e96-9181-d77cd8f8fa48.png)
(1)证明:AB⊥PC;
(2)求PD与平面ABCD所成角的正弦值
(3)在线段PD上是否存在点N,使得PB∥平面MNC?若存在,请找出N点的位置;若不存在,请说明理由
您最近一年使用:0次
2020-01-11更新
|
1026次组卷
|
8卷引用:四川省成都市温江区2018-2019学年高一下学期期末数学试题
9 . 在正四面体
中,异面直线
与
所成的角为
,直线
与平面
所成的角为
,二面角
的平面角为
,则
,
,
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442af36f0d841dc892f0750462b8a6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-03更新
|
1562次组卷
|
7卷引用:【新东方】杭州高二数学试卷246
18-19高一·全国·假期作业
名校
10 . 已知三棱锥
中,底面ABC为边长等于2的等边三角形,SA垂直于底面ABC,
,那么直线AB与平面SBC所成角的正弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f643db1101c352132c1d670e9cb30e.png)
您最近一年使用:0次
2019-12-24更新
|
240次组卷
|
4卷引用:步步高高一数学寒假作业:作业14空间中的垂直关系
(已下线)步步高高一数学寒假作业:作业14空间中的垂直关系天津市南开翔宇学校2020-2021学年高二上学期第一次月考数学试题四川省遂宁市射洪市射洪市太和中学2022-2023学年高二上学期期中数学试题北师大版(2019) 选修第一册 数学奇书 学业评价(三十) 空间中的角