名校
解题方法
1 . 如图,在四棱锥
中,
底面ABCD,底面ABCD为梯形,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/a92932d5-fbb2-4d32-9c31-393b372e8196.png?resizew=168)
(1)在PD上是否存在一点F,使得
平面PAB,若存在,找出F的位置,若不存在,请说明理由;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a86542e55ad35b90a5c7afd23e8803.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/a92932d5-fbb2-4d32-9c31-393b372e8196.png?resizew=168)
(1)在PD上是否存在一点F,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350d224711c8773a7c5a2b34bf40bedc.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2425afeae790f548529e24c81a40560c.png)
您最近一年使用:0次
2020-03-10更新
|
465次组卷
|
3卷引用:2020届甘肃省兰州市第二中学高三第五次月考理科数学试题
名校
2 . 如图,在多面体
中,
两两垂直,四边形
是边长为2的正方形,AC
DG
EF,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/09519bd8-4db8-427a-8d07-136acd7cf5ad.png?resizew=188)
(1)证明:
平面
.
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1e1ab067de809e8ab8880ef20eef21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83680a9b9a9526f75e0b37aa532132f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24ce38cc648118a6b00041384644f627.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/09519bd8-4db8-427a-8d07-136acd7cf5ad.png?resizew=188)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0b72906641ed13716cfbce50923282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb10d645970e5860afd3430957fab6c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47342449ca1a78a7550975a7589003c5.png)
您最近一年使用:0次
2020-04-24更新
|
229次组卷
|
5卷引用:甘肃省西北师大附中2020届高三5月模拟试卷理科数学试题
名校
3 . 如图,在直三棱柱
中,
是等腰直角三角形,
,
,点D是侧棱
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/19022026-f43c-4e93-ab78-615a2dc1fa64.png?resizew=120)
(1)证明:当点D是
的中点时,
平面BCD;
(2)若二面角
的余弦值为
求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/19022026-f43c-4e93-ab78-615a2dc1fa64.png?resizew=120)
(1)证明:当点D是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d06903252260d31d1a9cdeb735b089.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ceb31247add8ca7b0853e801e1d125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac5b7d85cc224776e36a76a4db5d356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24cbc5c871b748238867c34ffac6f70.png)
您最近一年使用:0次
名校
解题方法
4 . 直三棱柱
中,若
,
,则异面直线
与
所成的角为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/fe90703a-c806-493d-aa58-cf10db411d0e.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd8f940b796af67206b3f9dd410a407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/fe90703a-c806-493d-aa58-cf10db411d0e.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-18更新
|
251次组卷
|
3卷引用:甘肃省兰州市第六十一中学2023届高三上学期10月月考文科数学试题
名校
解题方法
5 . 如图,在四边形ABED中,AB
DE,AB⊥BE,点C在AB上,且AB⊥CD,AC=BC=CD=2,现将△ACD沿CD折起,使点A到达点P的位置,且PE与平面PBC所成的角为45°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/537fe6f3-5dd9-410b-867a-204057b21384.png?resizew=180)
(1)求证:平面PBC⊥平面DEBC;
(2)求二面角D-PE-B的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67be899bc131ec1b9921ae9787c40d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/537fe6f3-5dd9-410b-867a-204057b21384.png?resizew=180)
(1)求证:平面PBC⊥平面DEBC;
(2)求二面角D-PE-B的余弦值.
您最近一年使用:0次
9-10高二下·内蒙古包头·期中
6 . 如图,在四棱锥
中,底面ABCD是正方形,侧棱
底面ABCD,
,E是PC的中点,作
交PB于点F.
平面EDB;
(2)求证:
平面EFD;
(3)求平面CPB与平面PBD的夹角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d4c42112e0a22f240ce2ae432e5b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
(3)求平面CPB与平面PBD的夹角的大小.
您最近一年使用:0次
2022-01-09更新
|
1520次组卷
|
30卷引用:2017届甘肃兰州一中高三9月月考数学(理)试卷
2017届甘肃兰州一中高三9月月考数学(理)试卷(已下线)2011-2012学年度广东省普宁第二中学高二上学期11月月考理科数学试卷(已下线)2011-2012学年吉林省龙井市三中高二3月月考理科数学(已下线)2014届湖南省株洲市二中高三年级第二次月考文科数学试卷2016-2017学年河北卓越联盟高二理上学期月考三数学试卷江西省樟树中学2017-2018学年人教A版高一下学期第一次月考数学(理)试题山西省临猗县临晋中学2020-2021学年高二上学期9月月考数学(理)试题黑龙江省宾县一中2020-2021学年高二第一学期第二次月考数学试题甘肃省会宁县第一中学2020-2021学年高一上学期第二次月考数学试题贵州省清镇市博雅实验学校2023-2024学年高二上学期第四次月考数学试题数学(已下线)包头33中09-10高二下学期期中理科数学试题(已下线)2011年广东省揭阳市第一中学高一第一学期期末数学试卷(已下线)2010-2011学年山东省兖州市高二下学期期末考试数学(理)(已下线)2012届广东省肇庆市封开县南丰中学高三复习 必修一和必修二综合测试A(已下线)2011-2012学年湖南省华容县高二第一学期期末考试理科数学试卷(已下线)2011-2012学年云南省大理云龙一中高二上学期期末考试理科数学试卷(已下线)2011-2012学年河南省许昌部分学校高二上学期期末联考理科数学试卷(已下线)2012-2013年浙江台州六校高二上期中联考理科数学试卷2015-2016学年青海省西宁四中高二上学期期末文科数学试卷2015-2016年新疆兵团农二师华山中学高二下期中理数学卷天津市实验中学2019届高三热身数学(理)试题(已下线)【新东方】杭州新东方高中数学试卷322天津市南开区2020-2021学年高二上学期期末数学试题山东省菏泽市郓城县第一中学2021-2022学年高二下学期开学收心考试数学试题2004年普通高等学校招生考试数学(理)试题(天津卷)广东省汕尾市2022-2023学年高二下学期期末数学试题安徽省桐城中学2021-2022学年高二下学期开学检测数学试卷人教A版(2019)选择性必修第一册课本例题1.4 空间向量的应用广东省广州市空港实验中学2024届高三上学期期中数学试题(已下线)通关练04 空间向量与立体几何大题9考点精练(41题)- 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
名校
7 . 已知某几何体直观图和三视图如图所示,其正视图为矩形,侧视图为等腰直角三角形,俯视图为直角梯形.
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876416011583488/1877370709893120/STEM/55fcab2a2b9f45928f543991b3fbeeb8.png?resizew=251)
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876416011583488/1877370709893120/STEM/2f91afc3a70549518a86a04fffaa3993.png?resizew=271)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
;
(2)
;
(3)设
为
中点,在
边上找一点
,使
//平面
并求
.
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876416011583488/1877370709893120/STEM/55fcab2a2b9f45928f543991b3fbeeb8.png?resizew=251)
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876416011583488/1877370709893120/STEM/2f91afc3a70549518a86a04fffaa3993.png?resizew=271)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ee932878ff964321899fc3b92a1764.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e644ceb8d7eca683d38455d3b4367b0a.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568b3739e6cdcc146708d847092dc8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1997eb9d1e7a7e1c162eafaa000df2a8.png)
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12-13高二·云南大理·阶段练习
名校
8 . 如图,边长为2的等边△PCD所在的平面垂直于矩形ABCD所在的平面,BC=
,M为BC的中点.
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096641906999296/2098788964384768/STEM/f23e52ea0ed04bf981193fa2e9a38fae.png?resizew=196)
(I)证明:AM⊥PM ;
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096641906999296/2098788964384768/STEM/d7ad34b7aaa04554bd3b0a620b3af464.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096641906999296/2098788964384768/STEM/f23e52ea0ed04bf981193fa2e9a38fae.png?resizew=196)
(I)证明:AM⊥PM ;
(II)求二面角P-AM-D的大小.
您最近一年使用:0次
2018-12-17更新
|
532次组卷
|
13卷引用:【全国百强校】甘肃省兰州第一中学2019届高三12月月考数学(理)试题
【全国百强校】甘肃省兰州第一中学2019届高三12月月考数学(理)试题甘肃省兰州一中2019届高三上学期12月月考数学(理)试题(已下线)2012-2013学年云南大理州宾川县第四高级中学高二月考理科数学卷2015-2016学年福建省连江尚德中学高一上学期12月考数学试卷山东省济宁市曲阜市第一中学2020-2021学年高二阶段性检测(9月月考)数学试题广东省东莞市新世纪英才学校2021-2022学年高二上学期第一次教学质量检测数学试题2015-2016学年甘肃省会宁县一中高一上学期期末数学试卷山东省栖霞市第一中学2017-2018学年高一上学期期末测试数学试题(已下线)活页作业11 直线间的夹角 平面间的夹角-2018年数学同步优化指导(北师大版选修2-1)人教版 全能练习 必修2 第一章 滚动习题(二)河北省沧州市第三中学2019-2020学年高一下学期期末数学试题甘肃省民勤县第一中学2021-2022学年高二下学期期中考试数学(理) 试卷江西省九江第一中学2022-2023学年高二上学期期中考试数学试题
9 . 已知直三棱柱ABC﹣A1B1C1中,∠ABC=90°,AB=BC=BB1,求异面直线A1B与B1C所成的角_____ .
您最近一年使用:0次
2016-12-04更新
|
210次组卷
|
2卷引用:甘肃省兰州市(十四中,34中等)2017-2018学年高一上学期联片办学期末数学试题
名校
10 . 如图,已知矩形
所在平面垂直于直角梯形
所在平面于直线
,且
,
且
∥
.
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572498107219968/1572498112643072/STEM/4b93084b204b4899a29cd8ac278ceab5.png?resizew=177)
(Ⅰ)设点
为棱
中点,求证:
平面
;
(Ⅱ)线段
上是否存在一点
,使得直线
与平面
所成角的正弦值等于
?若存在,试确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1195c8aeabf1925d6980b8de505e4050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ee06b35a55efafdc6c9b4839195dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13eaa22726a8645009cede35eaba2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572498107219968/1572498112643072/STEM/4b93084b204b4899a29cd8ac278ceab5.png?resizew=177)
(Ⅰ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ee5f3950aa6f59c76cf91c3ed8f290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(Ⅱ)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2016-12-04更新
|
1681次组卷
|
8卷引用:甘肃省兰州大学附属中学2020-2021学年高三上学期12月月考数学理科试题