名校
1 . 在如图所示的多面体中,
且
,
,
,且
,
,且
,
平面
,
.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844656972963840/2848553311805440/STEM/d9954a0d33b44070b4fd77849f7a5621.png?resizew=211)
(1)求证:
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1989dc6aef61c294690d2105c72e894a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66514e4d9ad91dbc0cc4330de68a29e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb8a11edd393eafd58d9b886dbc7a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae554534d93527d59e71ec6bd2a630b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cf187bc2ede965870b90757b495f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b091ee5a8b32424b2b836dde7860c7.png)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844656972963840/2848553311805440/STEM/d9954a0d33b44070b4fd77849f7a5621.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5962e313ee2fc020c2e08b63ce9c17a5.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
您最近一年使用:0次
2021-11-10更新
|
353次组卷
|
3卷引用:北京市丰台区2021-2022学年高二上学期期中数学练习试题(A卷)
名校
2 . 如图,在四棱锥
中,底面
是矩形,面
面
,面
面
,
是
上一点,且
.
![](https://img.xkw.com/dksih/QBM/2021/12/29/2882817900273664/2885976412962816/STEM/2bdad57c-bdcf-4e51-aafe-e2dc56093a4e.png?resizew=254)
(1)证明:
面
;
(2)求二面角
的余弦值;
(3)求点
到平面
的距离.
![](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/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f079d212a9037ed2b0a8a5eecd51e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79a2100ec3a85bab03f88f23bd0b20e.png)
![](https://img.xkw.com/dksih/QBM/2021/12/29/2882817900273664/2885976412962816/STEM/2bdad57c-bdcf-4e51-aafe-e2dc56093a4e.png?resizew=254)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324a1792318a3528772781fac2b4d2e4.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
您最近一年使用:0次
2022-01-02更新
|
516次组卷
|
2卷引用:北京市八一学校2022届高三12月月考考试数学试题
名校
3 . 如图,在四棱锥中P﹣ABCD中,底面ABCD是边长为2的正方形,BC⊥平面PAB,PA⊥AB,PA=2.
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842828433719296/2844283613814784/STEM/58d51f6d-a446-4719-ab3e-9fff2f4861a5.png?resizew=236)
(1)求证:PA⊥平面ABCD;
(2)求平面PAD与平面PBC所成角的余弦值.
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842828433719296/2844283613814784/STEM/58d51f6d-a446-4719-ab3e-9fff2f4861a5.png?resizew=236)
(1)求证:PA⊥平面ABCD;
(2)求平面PAD与平面PBC所成角的余弦值.
您最近一年使用:0次
2021-11-04更新
|
921次组卷
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4卷引用:北京市昌平区第一中学2021-2022学年高二上学期期中考试数学试题
4 . 在棱长为2正方体
中,
,
分别为
和
的中点,
为
上的动点,平面
与棱
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/cf26b004-235d-48d6-834c-f404ba8c046e.png?resizew=161)
(1)求证:点
为
中点;
(2)求证:
;
(3)当
为何值时,
与平面
所成角的正弦值最大,并求出最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320e6d8f4930226455010435a200deef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/cf26b004-235d-48d6-834c-f404ba8c046e.png?resizew=161)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725402aaa8a61fab0f5ac6f73130c17f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be61a34b88a6cfa41578030cf42d3ef3.png)
您最近一年使用:0次
名校
5 . 在三棱锥
中,
分别是
上的点,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/766dbe37-d735-4378-90f0-f66d940f52da.png?resizew=186)
(1)求证:
平面
;
(2)若
平面
,
,
,求钝二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/766dbe37-d735-4378-90f0-f66d940f52da.png?resizew=186)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c954fec85f06fdb26e0a217cbb1ab33c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29cc627d76412c236aac6b29fa0fdf.png)
您最近一年使用:0次
2021-12-12更新
|
607次组卷
|
4卷引用:北京市第八中学2021-2022学年高二上学期期中考试数学试题
北京市第八中学2021-2022学年高二上学期期中考试数学试题安徽省合肥市第八中学2021-2022学年高二上学期段考(三)理科数学试题河南省南阳市第一中学校2021-2022学年高二上学期第四次月考数学理科试题(已下线)安徽省(九师联盟)2023届二模数学试题变式题17-22
名校
解题方法
6 . 已知三棱柱
的侧棱垂直于底面,
,E、F分别是棱
、BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/a9792f16-cb86-491a-b3f3-cecd3bf2a4c1.png?resizew=184)
(1)求证:
平面AEF;
(2)求二面角
的大小;
(3)求点F到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e078697b0951378465a85ed8083592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b77a03d567bafae72d7b14e69bace81.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/a9792f16-cb86-491a-b3f3-cecd3bf2a4c1.png?resizew=184)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c117069912c61e8f6eb6a687597547.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc8be1c529e195dc791f65eec9ec2b8.png)
(3)求点F到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a246e1cbc84b392ab81f70c74b23c28e.png)
您最近一年使用:0次
2021-10-29更新
|
562次组卷
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3卷引用:北京市工业大学附属中学2021-2022学年高二上学期期中考试数学试题
名校
7 . 已知正三棱柱底面边长为2,M是BC上一点,三角形
是以M为直角顶点的等腰直角三角形.
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883584834347008/2885802748534784/STEM/05c39bc87c014975bb63ab6473a6ce9b.png?resizew=148)
(1)证明M是BC中点;
(2)求二面角
的大小;
(3)直接写出点C到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b91c857bbe3c4f0f08dd2a4124a96e.png)
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883584834347008/2885802748534784/STEM/05c39bc87c014975bb63ab6473a6ce9b.png?resizew=148)
(1)证明M是BC中点;
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7abc9839172e487277e8105ad4cd4b2.png)
(3)直接写出点C到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b91c857bbe3c4f0f08dd2a4124a96e.png)
您最近一年使用:0次
2022-01-02更新
|
1127次组卷
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5卷引用:北京龙门育才学校2022届高三12月月考数学试题
北京龙门育才学校2022届高三12月月考数学试题(已下线)2022年全国新高考Ⅰ卷数学试题变式题9-12题(已下线)2022年全国新高考Ⅰ卷数学试题变式题17-19题黑龙江省双鸭山市饶河县高级中学2021-2022学年高二上学期期末数学试题广东省清远市连州市连州中学2023-2024学年高二下学期3月月考数学试题
名校
8 . 如图,在四棱锥
中,底面
是边长为2的正方形,
为正三角形,且侧面
底面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/31bcf2b6-6246-4943-a7e3-178ee49b731b.png?resizew=201)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/31bcf2b6-6246-4943-a7e3-178ee49b731b.png?resizew=201)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf2bc3dd1f1ae5d5e28b0366f454ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2022-01-06更新
|
1678次组卷
|
8卷引用:北京市2021届高三高考模拟数学试题
北京市2021届高三高考模拟数学试题(已下线)考点突破11 空间向量与立体几何-备战2022年高考数学一轮复习培优提升精炼(新高考地区专用)天津市和平区2021-2022学年高三上学期期末数学试题(已下线)专题10 立体几何线面位置关系及空间角的计算(练)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(浙江专用)》(已下线)解密12 空间向量在空间几何体中应用(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)天津市宁河区芦台第一中学2022届高三下学期线上模拟(一)数学试题天津市新华中学2022届高三下学期2月线上统练数学试题浙江省余姚中学2023-2024学年高二下学期3月质量检测试题数学试卷
2021高三·北京·专题练习
9 . 在如图所示的几何体中,四边形ABCD为矩形,平面ABEF⊥平面ABCD, EF // AB,∠BAF=90º,AD= 2,AB=AF=2EF =1,点P在棱DF上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/fa605578-7e37-4738-948f-4a141d94b6aa.png?resizew=289)
(1)若P是DF的中点,
①求证:BF // 平面ACP;
②求异面直线BE与CP所成角的余弦值;
(2)若二面角D -AP -C的余弦值为
,求PF的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/fa605578-7e37-4738-948f-4a141d94b6aa.png?resizew=289)
(1)若P是DF的中点,
①求证:BF // 平面ACP;
②求异面直线BE与CP所成角的余弦值;
(2)若二面角D -AP -C的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在边长为2的正方体
中,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/e973c3dd-775d-4e28-9a05-215bf0fb3782.png?resizew=172)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
平面
;
(2)求点
到平面
的距离;
(3)直线
与平面
所成角的正弦值.
![](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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/e973c3dd-775d-4e28-9a05-215bf0fb3782.png?resizew=172)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
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