1 . 如图,四棱锥P﹣ABCD的底面ABCD是正方形,PA⊥底面ABCD,E,F分别是AC,PB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/199b7b00-5683-468a-92b0-058142ca9096.png?resizew=144)
(1)证明:EF∥平面PCD;
(2)求证:面PBD⊥面PAC;
(3)若PA=AB,求PD与平面PAC所成角的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/199b7b00-5683-468a-92b0-058142ca9096.png?resizew=144)
(1)证明:EF∥平面PCD;
(2)求证:面PBD⊥面PAC;
(3)若PA=AB,求PD与平面PAC所成角的大小.
您最近一年使用:0次
11-12高三上·山东聊城·阶段练习
真题
名校
2 . 正三棱锥P-ABC高为2,侧棱与底面所成角为45°,则点 A到侧面PBC的距离是____________
您最近一年使用:0次
2016-12-01更新
|
868次组卷
|
5卷引用:黑龙江省哈尔滨市第六中学2020-2021学年高二下学期开学考试数学(理)试题
黑龙江省哈尔滨市第六中学2020-2021学年高二下学期开学考试数学(理)试题(已下线)2011-2012学年山东省聊城临清三中高三上学期12月理科数学试卷上海市奉贤中学2018-2019学年高二下学期期中数学试题2007年普通高等学校招生考试数学试题(江苏卷)山东省滕州市第二中学2022-2023学年高一下学期第一次月考数学试题
3 . 在正方体
中,直线
与平面
所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-01-18更新
|
215次组卷
|
2卷引用:广东省湛江市雷州市第二中学2023-2024学年高二下学期开学考试数学试题
名校
解题方法
4 . 把边长为4的正方形
沿对角线
折起,得到三棱锥
,当直线
和平面
所成的角为60°时,三棱锥
的体积为___________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ebd86a076448d19401268f139b5b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ebd86a076448d19401268f139b5b90.png)
您最近一年使用:0次
名校
5 . 正三棱柱
中,
,侧棱
垂直于底面,
,点D是侧面
的中心,则AD与平面
所成角的正弦值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ba846c4dec057a9eec4174306efd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b80ec548625badf9967afe49fd5871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-26更新
|
65次组卷
|
3卷引用:山西省汾阳市汾阳中学2020-2021学年高二下学期开学考试数学(理) 试题
6 . 已知四棱锥
,底面
是菱形,
是
的中点,
,点
在底面的射影
恰好在
上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa5aa6a6103dc78057146ba7f8ec8e4.png)
(Ⅰ)求证:平面
平面
;
(Ⅱ)如果二面角
的大小为
,求直线
与平面
所成二面角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7a42341edbc0b01ab0769c4c02c3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa5aa6a6103dc78057146ba7f8ec8e4.png)
(Ⅰ)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03203dd5ac79dd8c6707e4340773359.png)
(Ⅱ)如果二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c911b404bbb8f8d5f1470585fa31ad97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2017/12/14/1838342855294976/1839556594925568/STEM/a557f46d0354465f9c08812e7e6c9134.png?resizew=215)
您最近一年使用:0次
2017-12-16更新
|
583次组卷
|
2卷引用:安徽省定远县育才学校2017-2018学年高二下学期开学调研考试数学(文)试题
名校
7 . 点
到平面
距离分别为12,20,若斜线
与
成
的角,则
的长等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2017-04-17更新
|
476次组卷
|
2卷引用:2016-2017学年河南省郑州市第一中学高一下学期入学摸底考试数学试卷
名校
8 . 在正方体
中,过它的任意两条棱作平面,则能作得与
成
角的平面的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
A.2个 | B.4个 | C.6个 | D.8个 |
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥
中,平面
平面
,
,在锐角
中
,并且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/e35ef36e-fbec-4c13-bd80-d506c4d6a7bc.png?resizew=162)
(1)点
是
上的一点,证明:平面
平面
;
(2)若
与平面
成
角,当面
平面
时,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58579094b5d753e9205c2ec89ca3ae07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e8d9bd81b063a824baf17d947db5ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/e35ef36e-fbec-4c13-bd80-d506c4d6a7bc.png?resizew=162)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fb16d2f0db758b8b7a8d3743143f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fb16d2f0db758b8b7a8d3743143f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
12-13高二上·陕西西安·期末
解题方法
10 . 如图,在长方体ABCD-A1B1C1D1中,AB=BC=2,AA1=1,则AC1与平面A1B1C1D1所成角的正弦值为________ .
![](https://img.xkw.com/dksih/QBM/2012/8/30/1570992182132736/1570992187211776/STEM/8da9a222-e858-44e8-80e3-385a2306d002.png)
您最近一年使用:0次
2016-12-01更新
|
1188次组卷
|
5卷引用:海南省定安县定安中学2023-2024学年高二上学期开学考试数学试题
海南省定安县定安中学2023-2024学年高二上学期开学考试数学试题 (已下线)2011-2012学年度陕西省西安市第一中学高二第一学期期末理科数学试卷(已下线)2011-2012学年湖北省荆门市高一下学期期末质量检测数学试卷(已下线)测试卷13 空间点、线、面之间的位置关系-2021届高考数学一轮复习(文理通用)单元过关测试卷(已下线)专题8.5 直线、平面垂直的判定及其性质(练)【理】-《2020年高考一轮复习讲练测》