名校
1 . 如图,在三棱锥
中,
分别为
的中点,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/22bb1baf-9eab-4922-8dea-4eb758ad8744.png?resizew=157)
(1)求证:
;
(2)若
,
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610a917dc47fe622a3f61023712a6ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45087cde2d66377517a3fce5553b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/22bb1baf-9eab-4922-8dea-4eb758ad8744.png?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b0728555c1ec78d4407bf0ef255310.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70549f69b308c9a322cc4da1bf9e2af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a4e18417dc07aa681d88ae325dace9.png)
您最近一年使用:0次
2022-11-30更新
|
434次组卷
|
3卷引用:1号卷·A10联盟2021-2022学年(2020级)高二下学期期末联考数学试卷(人教A版)
名校
2 . 如图,在四棱台
中,底面
是边长为2的菱形,
,平面
平面
,点
分别为
的中点,
均为锐角.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/728a0186-2b6c-4c2e-9b54-f74aa2b56c10.png?resizew=225)
(1)求证:
;
(2)若异面直线
与
所成角正弦值为
,四棱锥
的体积为1,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/cd7a42341edbc0b01ab0769c4c02c3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9578aee1ffa7a74c04debf1679b068d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cef469b1ee29d124cfd6f62423724cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b28373d1cf44efd0301e8cbf16080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a046c94d66691601bd10ce823fd26629.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/728a0186-2b6c-4c2e-9b54-f74aa2b56c10.png?resizew=225)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1de5964353beb55c5058b2a431eecaf.png)
(2)若异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aace91caec728e174daec29a3568ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2e341788ce1be913bc47b3831c6baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1654dfe63f11563eadbaee32dae7b1e.png)
您最近一年使用:0次
2022-11-24更新
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3189次组卷
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11卷引用: 第1章 空间向量与立体几何单元测试能力卷-2023-2024学年高二数学上学期人教A版(2019)选择性必修第一册
(已下线) 第1章 空间向量与立体几何单元测试能力卷-2023-2024学年高二数学上学期人教A版(2019)选择性必修第一册(已下线)专题08 立体几何解答题常考全归类(精讲精练)-2(已下线)专题3 解答题题型吉林省长春市第二实验中学2022-2023学年高三上学期期末数学试题四川省成都市锦江区嘉祥外国语高级中学2022-2023学年高一下学期期末考试数学试题重庆市2023届高三上学期期中数学试题(已下线)专题15 立体几何解答题全归类(练习)(已下线)上海市奉贤区2024届高三一模数学试题变式题16-21浙江省稽阳联谊学校2022-2023学年高三上学期11月联考数学试题 广东省揭阳市普宁国贤学校2023届高三下学期3月连考3数学试题浙江省金华市东阳市外国语学校、东阳中学2022-2023学年高一下学期5月联考数学试题
名校
解题方法
3 . 如图,已知长方体
,
,
,直线BD与平面
所成角为30°,AE垂直BD于E.
的动点,试确定F的位置,使得
平面
,并说明理由;
(2)若F为棱
的中点,求点A到平面
的距离;
(3)若F为棱
上的动点(除端点
、
外),求二面角
的平面角的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc521258fcaeaf7acffc5ae98c3af6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ba1f8922a40840d56b1e9b3ae72a5b.png)
(2)若F为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(3)若F为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b123303738a595ec0126beb0fa64a8.png)
您最近一年使用:0次
2023-04-05更新
|
1203次组卷
|
8卷引用:上海市上海交通大学附属中学2020-2021学年高二上学期期末数学试题
上海市上海交通大学附属中学2020-2021学年高二上学期期末数学试题沪教版(2020) 必修第三册 达标检测 第11章 本章测试(已下线)第02讲 简单几何体(核心考点讲与练)(2)上海市大同中学2022-2023学年高二下学期3月月考数学试题上海市七宝中学2023-2024学年高二上学期开学摸底数学试题(已下线)专题01 空间向量与立体几何(3)(已下线)第3章 空间向量及其应用 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)专题05 空间直线与平面-《期末真题分类汇编》(上海专用)
名校
4 . 如图,在棱长为
的正方体
中,下列选项正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/44dd3829-d82e-4d9a-a628-2d0a9bb76d29.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/44dd3829-d82e-4d9a-a628-2d0a9bb76d29.png?resizew=169)
A.异面直线![]() ![]() ![]() | B.三棱锥![]() ![]() |
C.直线![]() ![]() | D.二面角![]() ![]() |
您最近一年使用:0次
2022-11-15更新
|
370次组卷
|
4卷引用:浙江省杭州市萧山区2022-2023学年高二上学期期中数学试题
名校
解题方法
5 . 如图,矩形
中,
分别为边
上的定点,且
,分别将
沿着
向矩形所在平面的同一侧翻折至
与
处,且满足
,分别将锐二面角
与锐二面角
记为
与
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6799ed1c5358555e2af85d4108155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e18b924ccf70f8648bad4d61c7500e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69b4b43974bce2d7aacf28e3c73df0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c53c0df02a4440e8f6d61b2c8dbab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc174c16284b964603d2b71f361e564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4cacd518769ce19310f5d9c6e73b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291e7718b229183b8b138f6669bb30a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a1d576d84c4de1687202e17b09afbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b380cc8844a515f1dab9c5d5dc5ec03c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5784937779b99c1b9227bf690115e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266092ecff7a98f6c49a2ba54516cc79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/c58b2b20-910e-486c-b1e6-a005706af172.png?resizew=254)
您最近一年使用:0次
2022-11-11更新
|
458次组卷
|
7卷引用:上海市大同中学2022-2023学年高二上学期期中数学试题
上海市大同中学2022-2023学年高二上学期期中数学试题第10章 空间直线与平面 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)(已下线)期中真题必刷常考60题(22个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)期中真题必刷压轴50题专练-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)期中真题必刷压轴60题(18个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)(已下线)第10章 空间直线与平面(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)(已下线)第二章 立体几何中的计算 专题一 空间角 微点8 二面角大小的计算综合训练【基础版】
6 . 如图,在斜四棱柱
中,底面
为菱形,
,记
在底面
的射影为
,且满足
,记二面角
的平面角为
,二面角
的平面角为
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/1f118e67-5582-407f-aaee-546865fb5427.png?resizew=235)
![](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/a368e2228242e965529198a2230aba00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8b05ed6e67d556f0c8e7609b4e1cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0f7697cf70e60018331e35e42816ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6997af36a239195f7b55557242cb03c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/1f118e67-5582-407f-aaee-546865fb5427.png?resizew=235)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
您最近一年使用:0次
名校
7 . 在平行四边形
中,
,沿
将
折起,使二面角
的大小为
,设点
在平面
上的射影为点
.
![](https://img.xkw.com/dksih/QBM/2022/10/25/3095493252677632/3096158509572096/STEM/1d5b119118a34778b6b8d06a181794f7.png?resizew=417)
(1)当
为何值时,三棱锥
的体积最大?最大值为多少?
(2)当
时,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8679764b2abafd810da5e7bde240dcdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282d4a8c3476b2b81e3fd73898e64539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2022/10/25/3095493252677632/3096158509572096/STEM/1d5b119118a34778b6b8d06a181794f7.png?resizew=417)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb01ad3508483c8929d5bf3fb8d5fc2c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
8 . 在正方体ABCD-A1B1C1D1中,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/8b990916-f9e6-4562-b563-f23c7e2c0815.png?resizew=211)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/8b990916-f9e6-4562-b563-f23c7e2c0815.png?resizew=211)
A.直线BD与A1D 所成的角为45° |
B.异面直线BD与AD1所成的角为60° |
C.二面角A-B1C-C1的正弦值为![]() |
D.二面角A-B1C-C1的正弦值为![]() |
您最近一年使用:0次
2022-10-18更新
|
682次组卷
|
8卷引用:辽宁省协作校2022-2023学年高二上学期第一次月考数学试题
名校
9 . 已知四边形
为直角梯形,其中
,
且
,
.现将三角形
沿直线
折起,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/4bc24bad-3148-4f70-a42a-db85551d5564.png?resizew=344)
(1)求证:平面
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086b195fa3c01695809ba94ddf0261aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80333568e65e6534c6d2e582f9dd0a47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c18f9acb7018337a961eed6358eeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ea6d39197c8f7159c37644f2f0fc78.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/4bc24bad-3148-4f70-a42a-db85551d5564.png?resizew=344)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0b2a4616dbc8c104bbb1cf9ec211d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c65321aa3b63016dad6dbbc625b0e0f.png)
您最近一年使用:0次
解题方法
10 . 如图,已知
,
,垂足为
、
,若
,则二面角
的大小是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e35f3a470885d88519e1a71db4b323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4d7c644adf1763379806644b7729c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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7卷引用:第04讲 利用几何法解决空间角和距离19种常见考法归类(3)
(已下线)第04讲 利用几何法解决空间角和距离19种常见考法归类(3)(已下线)10.4 平面与平面间的位置关系(第2课时)(九大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)沪教版(2020) 必修第三册 经典导学 课后作业 第10章 10.4 第2课时 二面角(已下线)专题10 盘点求二面角的三种方法-1(已下线)8.6.3平面与平面垂直(第1课时平面与平面垂直的判定定理)(精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第33讲二面角的几何求法(已下线)立体几何专题:空间二面角的5种求法