解题方法
1 . 如图,在等腰梯形ADEF中,
,
,
,
.在矩形ABCD中,
.平面
平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/0399315c-6f8d-4ee4-a992-e1ab80f8dd09.png?resizew=230)
(1)证明:
;
(2)求直线AF与平面CEF所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402ab8c49c4dd2aaa0ef47164c7cac00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb55961fe96e155242d18d98e5c2261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9367449a5847eade07e69f4feddcb027.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/0399315c-6f8d-4ee4-a992-e1ab80f8dd09.png?resizew=230)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a989aa942219970ec11ccd6ab186d69b.png)
(2)求直线AF与平面CEF所成角的大小.
您最近一年使用:0次
2022-05-11更新
|
932次组卷
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3卷引用:四川省绵阳市开元中学2021-2022年学年高二下学期期末适应性质量检测理科数学试题
名校
2 . 点
在以
为直径的球
的表面上,且
,
,已知球
的表面积是
,设直线
和
所成角的大小为
,直线
和平面
所成角的大小为
,四面体
内切球半径为
,下列说法中正确的个数是( )
①
平面
;②平面
平面
;③
;④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00b0d47c1f33748059cee20eb744156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02dba908a505cff93e0b297d00b82a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1716ac3f2868fcc4d86fad1c1c48c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00b0d47c1f33748059cee20eb744156.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-06-15更新
|
442次组卷
|
2卷引用:四川省成都市第七中学2022-2023学年高二下学期零诊数学试题(理科)
名校
3 . 在正方体
中,
是棱
的中点,
是侧面
内的动点,且
平面
,则
与平面
所成角的正切值
构成的集合是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/478b4a51-9997-45fb-96c1-f9c96246b29c.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424bdc1908e769dd5ed991f186e4ae81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59375dfae3a8ec264204cfe78caac97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/478b4a51-9997-45fb-96c1-f9c96246b29c.png?resizew=146)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2019-10-29更新
|
2339次组卷
|
12卷引用:四川省遂宁市射洪中学(英才班)2018-2019高二上学期期末考试数学(理)试题
四川省遂宁市射洪中学(英才班)2018-2019高二上学期期末考试数学(理)试题湖北省黄冈市2016-2017学年高一下学期期末考试理科数学试题广东省中山市2018届高三上学期期末考试数学(理)试题广东省中山市2018届高三上学期期末考试数学(文)试题人教B版 必修2 必杀技 第一章 全章训练湖南省长沙市明德中学2019-2020学年高一上学期第三次阶段测试数学试题2020届河北省衡水中学高三年级上学期五调考试数学(理科)试题人教A版(2019) 必修第二册 必杀技 第8章 素养检测2019届湖南省衡阳市第八中学高三上学期第三次月考数学(理)试题陕西省西安市西安第二十五中学2019-2020学年高三上学期11月大练习文科数学试题湖北省襄阳四中2019-2020学年高三下学期3月月考数学(理)试题2023版 湘教版(2019) 必修第二册 过关斩将 第4章 专题强化练7 空间角和距离
4 . 如图,正方形
和直角梯形
所在的平面互相垂直,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/91c9a761-f737-4cf5-930b-2e91895f6ffd.png?resizew=167)
(1)求证:
平面
;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dabec303b8f0af1fca7eeac041d70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560439a9b6c535ff5037c950283371cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/91c9a761-f737-4cf5-930b-2e91895f6ffd.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
5 . 如图,在直三棱柱
中,底面
为正三角形,侧面
为正方形,
,且
,
分别是
,
的中点.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
平面
;
(2)求直线
与平面
所成角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e44cb429eea46e7ee4320147192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/0ff2e0ef-ec9c-48c8-9259-97aff2328aeb.png?resizew=148)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
您最近一年使用:0次
名校
解题方法
6 . 在《九章算术》中,将底面为矩形且有一条侧棱与底面垂直的四棱锥称为“阳马”.如图,四棱锥P﹣ABCD为阳马,侧棱PA⊥底面ABCD,PA=AB=AD,E为棱PA的中点,则直线CE与平面PAD所成角的正弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/1ed94d17-4487-4b36-a4f3-23551b12c4df.png?resizew=135)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/1ed94d17-4487-4b36-a4f3-23551b12c4df.png?resizew=135)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-07-27更新
|
1368次组卷
|
11卷引用:四川省绵阳市2019-2020学年高一(下)期末数学试题
四川省绵阳市2019-2020学年高一(下)期末数学试题四川省绵阳市2019-2020学年高一下学期期末教学质量测试数学试题四川省广安市2020-2021学年高一下学期期末数学试题河北省衡水市安平中学2020-2021学年高一下学期期末数学试题宁夏吴忠中学2020-2021学年高二12月月考数学(理)试题广东省佛山市第一中学2020-2021学年高二上学期第一次段考数学试题山东省临沂市平邑第一中学新校区2021-2022学年高一下学期6月月考数学试题宁夏中卫中学2022-2023学年高二下学期第二次综合考试A卷数学(理)试题湖南省邵阳市第二中学2022-2023学年高一下学期期中数学试题广东省广州市真光中学2022-2023学年高一下学期5月阶段质量检测数学试题(已下线)第一章 空间向量与立体几何(单元提升卷)-【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)
7 . 如图,直四棱柱
中,底面
为矩形,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8bcc4264dcb354a0566c20774367c5.png)
与平面
所成的角的大小;
(2)求二面角
的余弦值;
(3)求直线
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8bcc4264dcb354a0566c20774367c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6664b1172f9b53c6424526a41b39703.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77fb7b9b35265b3eab89a01339a1061.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
您最近一年使用:0次
解题方法
8 . 如图,一个棱长为1的正方体的展开图,如果将它还原成正方体,那么下列选项中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/558f062e-2b26-4a32-a900-91fa7bd414c4.png?resizew=174)
A.![]() ![]() |
B.![]() |
C.![]() ![]() ![]() |
D.球![]() ![]() ![]() |
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥中
中,
,
,
,
,
是正三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/fefe71de-e744-4ee3-9525-7dd09fcaaee8.png?resizew=142)
(1)求证:
;
(2)求
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c9d5c0b9d7b7cf3e14f56bc3b4ac2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6914d401b0e7099dbea8ebdd5052ee7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e2903ff33266528a7902ad51cf8d75.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/fefe71de-e744-4ee3-9525-7dd09fcaaee8.png?resizew=142)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0530f462e5ec1e58c46e1f7644d0cc21.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2020-02-27更新
|
1407次组卷
|
3卷引用:四川省内江市2019-2020学年高二上学期期末数学(理)试题
10 . 如图,已知正方体
的棱长为
分别为
的中点.
(1)求证:平面
平面
;
(2)记直线
与平面
所成角为
,直线
与平面
所成角为
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b684d2e78a0eb1b406913f2730e1d226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/21/4f178a9d-3c36-4860-bd2a-ad08bf5de047.png?resizew=154)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845b00d3a92764712c61ce47042bd746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ecd8e274cebd92bd814ef7158b50fb.png)
(2)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ecd8e274cebd92bd814ef7158b50fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0226b9a9fd4d0647e4f759c07de9aaad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ecd8e274cebd92bd814ef7158b50fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d074f9eb1499273b3957602359c5fdf.png)
您最近一年使用:0次