名校
解题方法
1 . 如图,在三棱柱
中,四边形
是边长为4的正方形,平面
平面
.
平面
;
(2)求平面
与平面
夹角的余弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d47f5d365655ea3e7168f17c0c01396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117b88cbbe0dce7c0e65204ba3e88b58.png)
您最近一年使用:0次
2022-10-27更新
|
4071次组卷
|
22卷引用:重庆市万州赛德中学校2022-2023学年高二上学期期中数学试题
重庆市万州赛德中学校2022-2023学年高二上学期期中数学试题云南省楚雄市第一中学2022-2023学年高二年级上学期月考数学试题河南省郑州市郑州外国语学校2022-2023学年高二上学期期中数学试题湖南省怀化市第三中学2022-2023学年高二上学期期中数学试题云南民族大学附属中学2017-2018学年高二12月月考数学(理)试题江苏省清江中学2017-2018学年高二12月月考数学试题【全国百强校】新疆乌鲁木齐市第七十中学2018-2019学年高二下学期期中考试数学(理)试题陕西省咸阳市西北农林科技大学附中2018-2019学年高二上学期期末数学(理)试题湖南省娄底市双峰县第一中学2019-2020学年高二下学期入学考试数学试题湖南省衡阳市第八中学2019-2020学年高二下学期4月第一次月考数学试题陕西省榆林市绥德中学2019-2020学年高二上学期第三次阶段性考试数学(理)试题(已下线)模块三 专题4 空间向量与立体几何--基础夯实练(高二苏教)四川省合江县中学校2023-2024学年高二上学期第一次月考数学试题湖南省长沙市德成学校2023-2024学年高二上学期期中数学试题(已下线)模块一 专题2 A 空间向量的应用基础卷 期末终极研习室高二人教A版贵州省遵义市桐梓县荣兴高级中学2023-2024学年高二上学期第四次月考数学试题安徽省合肥市六校联盟2023-2024学年高二上学期1月期末考试数学试题福建省福州格致鼓山中学、教院二附中、铜盘中学、十五中、十中2023-2024学年高二上学期期末联考数学试题湖北省恩施州咸丰春晖高级中学2023-2024学年高二下学期第一次月考数学试题广东省华南师范大学附属中学2024届高三上学期开学测数学试题广东省揭阳市普宁市第二中学2024届高三上学期期中数学试题(已下线)6.5.2 平面与平面垂直-同步精品课堂(北师大版2019必修第二册)
名校
2 . 如图,三棱锥
中,点
在底面的射影
在
的高
上,
是侧棱
上一点,截面
与底面
所成的二面角的大小等于
的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/95c27b3c-476f-44ab-b089-af5b70e8a4fd.png?resizew=167)
(1)求证:
平面
;
(2)若
,求平面
与平面
所成夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c606f78391198b6648ba0b92b60f8cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d59283eb55b461ac1347e8ef446048.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/95c27b3c-476f-44ab-b089-af5b70e8a4fd.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c606f78391198b6648ba0b92b60f8cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ea8a6e59ec244515cb994cf332b937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb5255e2159617505e0c87d01437a57.png)
您最近一年使用:0次
2022-10-26更新
|
871次组卷
|
4卷引用:重庆市荣昌中学校2022-2023学年高二上学期期中数学试题
重庆市荣昌中学校2022-2023学年高二上学期期中数学试题重庆市巴蜀中学校2023届高三上学期高考适应性月考(三)数学试题湖南省株洲市第二中学2022-2023学年高二下学期第一次月考数学试题(已下线)2023年北京高考数学真题变式题16-21
3 . 如图,在三棱锥
中,
,
,
、
分别是线段
、
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/458aaa4f-8293-45a8-91f2-d7dbb64c51f4.png?resizew=175)
(1)证明:直线
平面
;
(2)若二面角
的大小为
,求直线
和平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5326159a6399c85b323e12469433396c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0e01be509f88f309145009287664da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5f6a5ef7adde151236e78ec5d8c00d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e30f954b6c7cb2f353505b44cf300fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839710017c26592a5c0d36db80de10a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/458aaa4f-8293-45a8-91f2-d7dbb64c51f4.png?resizew=175)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717755df2adbebf93dc4ea88ed9fa7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d3f5f4c4419913c1232b7aae03ade.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3b24dda15facdc18a70fa72dd69bd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3f6406a480e548d8f14cc984f12ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
您最近一年使用:0次
4 . 如图,在长方体
中,点
分别在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/2bffead2-564b-48b9-aad2-b9b902aadeba.png?resizew=158)
(1)证明:
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce9b6bb1f3e46026af863b2b269ecf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92de98e3d0422f62885734a07b59413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130bee63613368ae90cceb92f1868227.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/2bffead2-564b-48b9-aad2-b9b902aadeba.png?resizew=158)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adbe28084ef96eafc2b91719644a0cb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b579112bc4b3e71572ccdbfd4475cfb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e719971a3bc4cc21d9a1a4fc99e3278.png)
您最近一年使用:0次
名校
5 . 如图,在四棱锥
中,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/8fee69d0-04d0-4743-9cfb-dff700246615.png?resizew=183)
(1)求证:
;
(2)求平面
与平面
夹角的余弦值;
(3)若点E在棱
上,且
平面
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553d5269397c5cf0909c734464e1b472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73eb061b58805586c56ed73f7034fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6503443cca2402310e480e3be0c47f05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/8fee69d0-04d0-4743-9cfb-dff700246615.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c209827e914ab17f5bc2e6fab044a05.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)若点E在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137fcdac119eff6ac5990b6d201615df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
2022-10-21更新
|
1670次组卷
|
12卷引用:重庆市第八中学校2022-2023学年高二上学期期中复习数学试题
重庆市第八中学校2022-2023学年高二上学期期中复习数学试题陕西省渭南市大荔县2021-2022学年高二上学期期末理科数学试题江苏省盐城市2021-2022学年高二下学期期末模拟数学试题辽宁省沈阳市市级重点协作校2021-2022学年上学期高二数学期中联考数学试题天津市西青区杨柳青第一中学2022届高三下学期第二次适应性测试数学试题天津市第二中学2022届高三下学期5月线上测试数学试题北京市顺义区第一中学2021-2022学年高二上学期期中考试数学试题北京市交通大学附属中学2023届高三上学期12月诊断练习数学试题北京市丰台区2018年高三年级一模数学试题(理)北京市城六区2018届高三一模理科数学解答题分类汇编之立体几何北京市第二十二中学2019-2020学年第一学期期中考试高三数学(已下线)模块十一 立体几何-2
名校
解题方法
6 . 如图,在四棱锥
中,底面
是矩形,
,
,
平面
,且
是PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/22fdccae-1618-4064-b7b9-98e3e4364294.png?resizew=166)
(1)求证:
平面
;
(2)求异面直线
与
所成角的正切值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab695aa698ac0492ecb4198242db6e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93edbd735d79524f463085a4e9093bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb18c7c5391647214d4da31a88202d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/22fdccae-1618-4064-b7b9-98e3e4364294.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1337ec0af72822be72c4bb4926a4e642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
您最近一年使用:0次
2022-10-21更新
|
235次组卷
|
2卷引用:重庆市广益中学校2022-2023学年高二上学期10月月考数学试题
名校
7 . 如图,在四棱锥
中,PA⊥底面ABCD,底面ABCD是矩形,
,且
,点E在PC上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/e34edf18-bdf8-43d4-9f02-fa17c9498cda.png?resizew=146)
(1)求证:BD⊥平面PAC;
(2)若E为PC的中点,求二面角B-ED-C的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98103ebb4fa6118eb6b91c09e7cf600e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540951846d8622c3eb858a326f5e23de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/e34edf18-bdf8-43d4-9f02-fa17c9498cda.png?resizew=146)
(1)求证:BD⊥平面PAC;
(2)若E为PC的中点,求二面角B-ED-C的余弦值.
您最近一年使用:0次
2022-10-14更新
|
361次组卷
|
3卷引用:重庆市万州第二高级中学2022-2023学年高二上学期第一次月考数学试题
名校
解题方法
8 . 若异面直线
,
的方向向量分别是
,
,则异面直线
与
的夹角的余弦值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44d51205d4fc3e8b1a530b43c2b8aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c9ce85bc7fe168e3f2f01cd5adb220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-10-12更新
|
445次组卷
|
5卷引用:重庆市长寿中学校2022-2023学年高二上学期期中数学试题
名校
解题方法
9 . 如图(一)四边形
是等腰梯形,
,
,
,
,过
点作
,垂足为
点,将
沿
折到
位置如图(二),且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/5cc68fbf-20ae-4747-b0a7-5c6992943c26.png?resizew=264)
(1)证明:平面
平面
;
(2)棱
上是否存在点
使得二面角
的余弦值为
?若不存在,请说明理由;若存在,请求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e76526b18b736232d9c273a07904dbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ed75e65e7374c38ffb1f75259a8beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e92fed536087a6c2e8c44296b81a1d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7192de8501f2fe79218ddcc053fb1fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/5cc68fbf-20ae-4747-b0a7-5c6992943c26.png?resizew=264)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a965d0e52a2545b9a6ef62a9a6048d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e1e4ea140260a790885868bc7a94f2.png)
(2)棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916f4039437ab274566bcfae7d99c203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2e3526bc8be03b7a602d25ea2c7e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fab0174cf7e70cdf5f2b9debe3ce84b.png)
您最近一年使用:0次
名校
10 . 如图,正方体
中,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/82822081-e42f-440f-8112-f61f3f311ceb.png?resizew=166)
(1)证明:
平面
;
(2)求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362ef25f87ac1de47027b7d7c150a56c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/82822081-e42f-440f-8112-f61f3f311ceb.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
您最近一年使用:0次
2022-10-08更新
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