名校
解题方法
1 . 在三棱锥
中,
为
的垂心,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/527f6e7d-251d-4cbd-a2c9-dd06d830c3d4.png?resizew=166)
(1)证明:
;
(2)若平面
把三棱锥
分成体积相等的两部分,
与平面
所成角的
,求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1d487090d222000a07d06d925225c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19053584897fb300cfce8407b6483821.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/527f6e7d-251d-4cbd-a2c9-dd06d830c3d4.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f875e05255d09eb635689e9e997a3c1.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f881d34c6db7b119055f92bd4b87da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95226c64f0afdaa10b95ec097a0720ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f881d34c6db7b119055f92bd4b87da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158d052e9036b34deca74c500c27151a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36957cc47e8b85809737f005345fd619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af57d63e83ef0e183add10cd6beec65b.png)
您最近一年使用:0次
2022-09-03更新
|
465次组卷
|
4卷引用:浙江省七彩阳光新高考研究联盟2022-2023学年高三上学期返校联考数学试题
浙江省七彩阳光新高考研究联盟2022-2023学年高三上学期返校联考数学试题(已下线)考向30 线线角、线面角、二面角与距离问题(四大经典题型)山东省东营市广饶县第一中学2022-2023学年高二上学期10月月考数学试题(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)(2)-【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)
名校
解题方法
2 . 如图,在直角
中,
,将
绕边
旋转到
的位置,使
,得到圆锥的一部分,点
为
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/9a28aef2-d50e-4136-9227-ec8696c06aa8.png?resizew=107)
(1)求点
到平面
的距离;
(2)设直线
与平面
所成的角为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e534b545e86c02abd2a0dc75d32b407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5c239eef2d9abdafe0b0662fe2f514.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e534b545e86c02abd2a0dc75d32b407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5dd6306e00de2ae82d6605308792db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e21aa38de80da8ccaa7ce51595e7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d05436eec0a671f8e6b16754d00bd97.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/9a28aef2-d50e-4136-9227-ec8696c06aa8.png?resizew=107)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2cd8bc5daf404505b0b7900548f150.png)
您最近一年使用:0次
2022-08-31更新
|
705次组卷
|
4卷引用:湖南省部分校2022-2023学年高三上学期入学检测数学试题
3 . 如图,
平面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3df678ee817c7c82b29beb464f8e767.png)
分别为
的中点.
(1)证明:
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689c065652544780be8b33ae92cbb6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e38fa6a96ec7d8b2bc6d041ac9251d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3df678ee817c7c82b29beb464f8e767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9c457e757ac146cbb07008c58944fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/6b1c24de-bf9d-4cb7-9531-330dd0bcd195.png?resizew=181)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61346bd4091070ba84a4046f87f365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
名校
4 . 如图,在四棱锥
中,底面
是矩形,
,
,已知
,且
平面
,
,
.
平面PFG,并说明理由;
(2)若二面角
的余弦值为
,求PG与平面PEM所成角的正切值.
![](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/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d5b85618337a9d7d86d36fb30b370e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2567f15f36ff5188f82f3f8815f414c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6463cc2d538c07f029e0b13f7728d602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80deda85e1c07a6771f335fa392a2514.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c563ff3687fc88daaf60c17399616d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
您最近一年使用:0次
2022-07-21更新
|
987次组卷
|
4卷引用:辽宁省葫芦岛市2021-2022学年高一下学期期末数学试题
辽宁省葫芦岛市2021-2022学年高一下学期期末数学试题(已下线)专题强化训练四 直线与平面所成的角、二面角的平面角的常见解法(1)-《考点·题型·技巧》(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(2)辽宁省大连市第三十六中学2022-2023学年高一下学期6月月考数学试题
5 . 如图,在几何体
中,四边形
是菱形,
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/5f5478b9-6b9c-4e75-9c04-f5e90b185c0a.png?resizew=201)
(1)证明:平面
平面
;
(2)若
,
,且二面角
是直二面角,求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e0bd4b30dc777ac9da80f6baa3eb31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2612c3ed33135b60b5a08c173c9f84.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/5f5478b9-6b9c-4e75-9c04-f5e90b185c0a.png?resizew=201)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ce82a4c37365f2d4dea2c4ad2e3288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2443a94bed3d2b1f95c04ebd61ac134a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179071147b940f5e2f80e74526cebf92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a34e44c5d7e1d22521fb293994f5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
6 . 如图,在以
为顶点的五面体中,面
为正方形,
,
,且二面角
与二面角
都是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/22/8b4d991a-1572-4076-a7d4-8107828cc9da.png?resizew=195)
(1)证明:
平面EFDC;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708b70cc6e08253e6b476dfbd1a2e749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9839448fd9fc1777c0638195d26a78d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa0e38c274227cbc24bda9ecb457ebfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9726261c25e7086835912c0d4815d270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4343d561ca5566c09bccb8f321be0e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/22/8b4d991a-1572-4076-a7d4-8107828cc9da.png?resizew=195)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962cdb84a4a8cc279bb54e19cb76c7fd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6240d4cf0fb44aa1e6bdaf2a4bdfb37e.png)
您最近一年使用:0次
7 . 如图,在三棱锥D-ABC中,△ABC是边长为2的正三角形,△ADC是以AC为底边的等腰直角三角形,E为AC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/de80a130-22ee-4153-ac43-5f3fe2fb2221.png?resizew=194)
(1)证明:平面BED⊥平面ACD;
(2)若BD=2,点F在BD上,当△AFC的面积最小时,求FA与平面ABC所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/de80a130-22ee-4153-ac43-5f3fe2fb2221.png?resizew=194)
(1)证明:平面BED⊥平面ACD;
(2)若BD=2,点F在BD上,当△AFC的面积最小时,求FA与平面ABC所成角的正弦值.
您最近一年使用:0次
8 . 如图所示,在直角梯形BCEF中,
,A,D分别是BF,CE上的点,且
,
,将四边形ADEF沿AD折起,连接BE,BF,CE,AC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9590aac9-f994-41d8-9558-2667275643af.png?resizew=264)
(1)证明:
面BEF;
(2)若
,求直线BF与平面EBC所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb18f3937480ab5ad6cf0d65a357c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc5e7e3011ea41abd70e1a2c01b0b3e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9590aac9-f994-41d8-9558-2667275643af.png?resizew=264)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429551ecb5930b2f033019e4d5b37ad7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a05d97047e3a5c8e125d334d478ee8e.png)
您最近一年使用:0次
2022-07-13更新
|
352次组卷
|
2卷引用:河南省驻马店市2021-2022学年高一下学期期末数学试题
9 . 如图所示,在四棱锥
中,已知底面
是边长为6的菱形,
,
,
,
为线段
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/9522ae1a-ca64-4a81-aaea-69ab7812afd6.png?resizew=184)
(1)证明:平面
平面
;
(2)
为线段
上的一点,且
平面
,求
的值及直线
与平面
的夹角.
![](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/3903ddf5830536f7ae700e082bc58f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a19daec2e4ae64d4b710a80c4783c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee26747d34326dc95617d94aebd10bce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/9522ae1a-ca64-4a81-aaea-69ab7812afd6.png?resizew=184)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa0fe5da877bd3d3e406957d58a2679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-07-13更新
|
382次组卷
|
3卷引用:湖南省永州市2021-2022学年高一下学期期末数学试题
名校
10 . 如图,在正三棱柱
中,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018059475951616/3020970611236864/STEM/6653dd75c4ae49f7abe77197469aabfc.png?resizew=133)
(1)证明:
平面
;
(2)求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0876c707308127bdd67d69a6f98850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018059475951616/3020970611236864/STEM/6653dd75c4ae49f7abe77197469aabfc.png?resizew=133)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
您最近一年使用:0次
2022-07-12更新
|
861次组卷
|
4卷引用:山东省枣庄市2021-2022学年高一下学期期末数学试题