1 . 如图,已知在直四棱柱
中,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8685f5b5ff947449a3123d041ad4f753.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/23f635d0-54ec-49b9-891a-96aeefbe89d0.png?resizew=139)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8685f5b5ff947449a3123d041ad4f753.png)
![](https://img.xkw.com/dksih/QBM/2019/8/29/2279310068776960/2285598993227776/STEM/9e342431857143c59a43132943c59152.png?resizew=25)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/23f635d0-54ec-49b9-891a-96aeefbe89d0.png?resizew=139)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5ae16a7145a28a91d45ef950a07c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e0254c84e44728749b34c08c28ab1e.png)
您最近一年使用:0次
2 . 如图,在三棱柱ABC-A1B1C1中,BB1⊥平面ABC,∠BAC=90°,AC=AB=AA1,E是BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/80160bc2-d47f-4b2a-90d0-9085e2e228e6.png?resizew=121)
(1)求证:AE⊥B1C;
(2)求异面直线AE与A1C所成的角的大小;
(3)若G为C1C中点,求二面角C-AG-E的正切值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/80160bc2-d47f-4b2a-90d0-9085e2e228e6.png?resizew=121)
(1)求证:AE⊥B1C;
(2)求异面直线AE与A1C所成的角的大小;
(3)若G为C1C中点,求二面角C-AG-E的正切值.
您最近一年使用:0次
2019-03-29更新
|
1147次组卷
|
12卷引用:贵州省三都民族中学2017-2018学年高二第二学期第一次月考数学(理)试题
贵州省三都民族中学2017-2018学年高二第二学期第一次月考数学(理)试题【全国百强校】黑龙江省实验中学2017-2018学年高一下学期期末考试数学(文)试题【全国百强校】黑龙江省实验中学2017-2018学年高一下学期期末考试数学(理)试题【全国百强校】陕西省西安中学2018-2019学年高二(上)期末数学(理)试题广东省佛山市第一中学2019-2020学年高二上学期10月月考数学试题河北省张家口市第一中学2018-2019学年高一衔接班下学期期末数学试题吉林省长春市农安县实验中学2019-2020学年高一下学期期末考试数学试题(已下线)第32讲 平面的基本性质与推论-2021年新高考数学一轮专题复习(新高考专版)海南省海口市灵山中学2020届高三上学期数学第四次月考试题(已下线)考点50 用综合法求角与距离-备战2022年高考数学一轮复习考点帮(新高考地区专用)【学科网名师堂】北京九中2019-2020学年高二上学期期中数学试题(已下线)第50讲 用综合法求角与距离
真题
解题方法
3 . 如图,在三棱锥
中,
,
,
,点
在平面
内的射影
在
上.
(1)求直线
与平面
所成的角的大小;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df9b574c6b6a4c878bf425d4fa31d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e68018750dcdcb6a346761c96a45cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc63b945d37ff1fc7c4df312c3c23fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e820aec9c1a975242fe6d76408a9cde8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/399885fe-1d82-461d-a195-831eee9d8f3f.png?resizew=220)
您最近一年使用:0次
4 . 如图,在直三棱柱
中,
,
,D是BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/047e9828-1de1-4af6-a12d-0efb6bfccd55.png?resizew=180)
(1)求证:
平面
;
2).求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80969d2b85b57d776a482dde2df0f5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc555c17a209c7d5cae35bb11b8830e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af99bbb02d22f3f582584092ad1beb0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/047e9828-1de1-4af6-a12d-0efb6bfccd55.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f5233985626c2701be0394ebc1ecfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803bcb6a4465ad0d433651156f7337cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f25c5543b39190dc2499aa66f939659.png)
您最近一年使用:0次
5 . 如图,四边形
是矩形,沿对角线
将
折起,使得点
在平面
上的射影恰好落在边
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/40949aeb-c046-4eee-b6e4-0443830d7589.png?resizew=353)
(1)求证:平面
平面
;
(2)当
时,求二面角
的余弦值.
![](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/d9f8f01137e92c0f2e63467036ae9cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/40949aeb-c046-4eee-b6e4-0443830d7589.png?resizew=353)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8eb3a83ac62333bf3f8f893e3475126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0ac3005d5ecd6d4cea0ce99a47ef3c.png)
您最近一年使用:0次
2018-03-30更新
|
1957次组卷
|
7卷引用:贵州省思南中学2019-2020学年高二上学期期末考试数学(理)试题
贵州省思南中学2019-2020学年高二上学期期末考试数学(理)试题安徽省安庆市2018届高三二模考试理科数学试题【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)试卷安徽省宿州市砀山县第二中学2019-2020学年高三上学期第四次月考数学(文)试题2广东省广雅中学2018-2019学年高三上学期期中数学(理)试题(已下线)专题02 各类角的证明与求解(第三篇)-备战2020年高考数学大题精做之解答题题型全覆盖(已下线)选择性必修第一册模块检测卷(能力提升)-2020-2021学年高二数学单元测试定心卷(人教A版2019选择性必修第一册)
6 . 如图,已知棱柱
中,底面
是平行四边形,侧棱
底面
,
.
![](https://img.xkw.com/dksih/QBM/2017/5/8/1682702602084352/1684516673716224/STEM/bd9b5c01c593493c886e2b349ee68d51.png?resizew=235)
(1)求证:
平面
;
(2)求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a51471ddc72972cdce9ae16748dd54f.png)
![](https://img.xkw.com/dksih/QBM/2017/5/8/1682702602084352/1684516673716224/STEM/bd9b5c01c593493c886e2b349ee68d51.png?resizew=235)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d027be176d18651cfd30f5492789ba.png)
您最近一年使用:0次
2017-05-11更新
|
349次组卷
|
3卷引用:贵州省贵阳市2017年高三适应性考试(二)理科数学试题
7 . 如图,四边形
是体积为
的圆柱
的轴截面,点
在底面圆周上,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2017/4/22/1671451843780608/1675008967917568/STEM/0bbe372367a24874a8372ea96221fc71.png?resizew=259)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e20dfdb0533931453c63bf22419dbb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d095a6f7e13267ec2ed80827c72716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://img.xkw.com/dksih/QBM/2017/4/22/1671451843780608/1675008967917568/STEM/0bbe372367a24874a8372ea96221fc71.png?resizew=259)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071159cac13097ea0928285bc1be66d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5082fa0f36a008dc2838146ea2bf2e1b.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1268d322e77220ab39f1ebda2f1923ba.png)
您最近一年使用:0次
2017-04-27更新
|
654次组卷
|
2卷引用:贵州省遵义市第四中学2018届高三上学期第一次月考理数试题
名校
8 . 如图,等腰
中,
,
,点
分别在
上,
,
为
边上的中点,
交
于点
,将
沿
折到
的位置,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/99d12685-9c1a-4275-8a68-b7a06fac6bb6.png?resizew=192)
(1)证明:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fe75f967e8915c9124a5d4ac420a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af42b23810ede42d88067f5d86dbc5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9272e76d70b87882b81823e5de53bc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f024e7418c0607cae20d36db6e6f74.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/99d12685-9c1a-4275-8a68-b7a06fac6bb6.png?resizew=192)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd40c315ef80bafac2af3e15e3920782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b50add25141b34a725b1814a73651505.png)
您最近一年使用:0次
9 . 如图:在四棱锥
中,底面
是边长为2的正方形,其它四个侧面都是侧棱长为
的等腰三角形.
![](https://img.xkw.com/dksih/QBM/2012/2/6/1570717257007104/1570717262626816/STEM/9f0383676d6b426488349d75281635d7.png?resizew=170)
(1)求二面角
的平面角的大小;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95366a7c9721ed4e2f6f7dbc9ff73540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30efdb9c7eb4b788352056f3edf21635.png)
![](https://img.xkw.com/dksih/QBM/2012/2/6/1570717257007104/1570717262626816/STEM/9f0383676d6b426488349d75281635d7.png?resizew=170)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef463661f015a797f4905a3b17de2592.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95366a7c9721ed4e2f6f7dbc9ff73540.png)
您最近一年使用:0次
2016-12-01更新
|
621次组卷
|
3卷引用:贵州省思南中学2019-2020学年高一下学期期末考试数学试题