名校
解题方法
1 . 设平面
平面
,
、
,
、
, 直线
与CD交于点
, 且点
位于平面
,
之间,
,
,
, 则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576501d681ad21ea2f8f1f99b57e468a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5ec2523acf52815c372ab68df4b1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff81e174c23b5fc8e7ef90aeb2c3c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaccf1887c4b530fd86a2f0f199c6797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11b77ed5f57df298dafd72504403c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27b68dc0c62cbb9885f193da4082623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2ec534ecd9e889a7309f0ac34647d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576501d681ad21ea2f8f1f99b57e468a.png)
您最近一年使用:0次
2018-01-18更新
|
387次组卷
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12卷引用:2016-2017学年四川成都经济技术开发区实验高二理10月考数学卷
2016-2017学年四川成都经济技术开发区实验高二理10月考数学卷2014-2015学年河北省成安县第一中学高一12月月考数学试卷安徽省合肥市第一中学2017-2018学年高二上学期段一考试(月考)数学(文)试题人教A版2017-2018学年必修二第2章 章末综合测评1数学试题甘肃省会宁县第一中学2017-2018学年高一上学期第二次月考(12月)数学试题安徽省合肥市第一中学2017-2018学年高二上学期月考文数试题山东省济南市长清第一中学大学科技园校区2017- 2018学年高一上学期第三次阶段性质量检测数学试题(已下线)第01章 立体几何初步(B)-2018-2019版数学创新设计课堂讲义同步系列(北师大版必修2)(已下线)第02章 章末检测(A)-2018-2019版数学创新设计课堂讲义同步系列(人教A版必修2)(已下线)2.2.2 平面与平面平行的判定-2020-2021学年高一数学课时同步练(人教A版必修2)江苏省南京师范大学附属实验学校2022-2023学年高一下学期5月月考数学试题1号卷·A10联盟2022届全国高考第一轮总复习试卷数学(文科)试题(十五)
2 . 如图,在四棱锥E-ABCD中,AE⊥DE,CD⊥平面ADE,AB⊥平面ADE,CD=DA=6,AB=2,DE=3.
![](https://img.xkw.com/dksih/QBM/2017/12/26/1846880297295872/1848652311044096/STEM/a1bd74957de7433fa807605f59174018.png?resizew=194)
(I)求棱锥C-ADE的体积;
(II)求证:平面ACE⊥平面CDE;
(III)在线段DE上是否存在一点F,使AF∥平面BCE?若存在,求出
的值;若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/2017/12/26/1846880297295872/1848652311044096/STEM/a1bd74957de7433fa807605f59174018.png?resizew=194)
(I)求棱锥C-ADE的体积;
(II)求证:平面ACE⊥平面CDE;
(III)在线段DE上是否存在一点F,使AF∥平面BCE?若存在,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc046ee7804a9ff650a90b23e9805f1e.png)
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2017-12-29更新
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1071次组卷
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9卷引用:2017届四川省成都市石室中学高三二诊模拟考试数学(文)试卷
11-12高二上·广东佛山·期中
3 . 已知平面
和直线
,给出条件:
①
;②
;③
;④
;⑤
.
(1)当满足条件_________ 时,有
;
(2)当满足条件________ 时,有
.(填所选条件的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa404d3ff313b0a28a76a48d7d87234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34512482dc6ca8f32d80e4b37d64086b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
(1)当满足条件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713288c700aee0f6f797e06760466185.png)
(2)当满足条件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b610e3c5b3d78a5730e7f3d736ac28.png)
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2019-01-30更新
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1317次组卷
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16卷引用:四川省乐山市沫若中学2022-2023学年高二上学期第一次月考数学试题
四川省乐山市沫若中学2022-2023学年高二上学期第一次月考数学试题(已下线)2010-2011年广东省佛山市南海一中高二上学期期中考试数学文卷(已下线)2012年苏教版高中数学选修2-2 2.2直接证明与间接证明练习卷(已下线)2015高考数学(理)一轮配套特训:7-5直线、平面垂直的判定及性质北京西城鲁迅中学2017-2018学年高二上期学期中考试数学试题北师大版 全能练习 必修2 第一章 本章能力测评(一)A第二章 自我评估(二)福建省莆田市仙游县枫亭中学2019-2020学年高一上学期期末数学试题(已下线)【新教材精创】11.4.2平面与平面垂直(1)练习(2)(已下线)第26练 垂直关系-2021年高考数学一轮复习小题必刷(山东专用)浙江省台州市蓬街私立中学2019-2020学年高二上学期第一次月考数学试题(已下线)8.5 空间直线、平面的垂直--2020--2021高中数学新教材配套提升训练(人教A版必修第二册)(已下线)专题8.5 空间直线、平面的垂直(A卷基础篇)-2020-2021学年高一数学必修第二册同步单元AB卷(新教材人教A版,浙江专用)北京市房山区2022-2023学年高二上学期学业水平调研(期中)考试数学试题2005年普通高等学校招生考试数学(文)试题(湖南卷)山东省枣庄市峄城区山师大峄城实验高中2022-2023学年高一下学期第二次月考数学试题
名校
解题方法
4 . 如图,在四棱锥
中,底面
为矩形,平面
面
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e7d551cca653e2d638c8cab4c2fda8.png)
,
为
中点.
![](https://img.xkw.com/dksih/QBM/2017/6/18/1711456547905536/1711609251479552/STEM/e1367e2d69ee4f69bf57868682e922a8.png?resizew=321)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](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/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85441697d4703495c4a6369addfc9fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e7d551cca653e2d638c8cab4c2fda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7a201432af0a2f9d21c6803906f5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2017/6/18/1711456547905536/1711609251479552/STEM/e1367e2d69ee4f69bf57868682e922a8.png?resizew=321)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb178784aa857d4d4683e650273f054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7ed85b76fb4c5e9a9a60bff4337742.png)
您最近一年使用:0次
2017-06-18更新
|
1582次组卷
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2卷引用:四川省成都市龙泉一中、新都一中等九校2016-2017学年高二6月联考数学(文)试题
名校
5 . 已知球内接正四棱锥
的高为
相交于
,球的表面积为
,若
为
中点.
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b56f094316f0d3ad7c3b775eaaae8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020402293b35d704f83ed5eaf5e98028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a04ea8ebc597fd1f5d6bb8df181a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a351d71fa01d3f5920e374a8ee7b524.png)
您最近一年使用:0次
2017-06-05更新
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863次组卷
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2卷引用:四川省成都市第七中学2017届高三6月1日高考热身考试数学(理)试题
名校
解题方法
6 . 如图,在四棱锥
中,
底面
,
,
,点
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/d820d3a6-a003-48ea-92f1-3503dc4d03f0.png?resizew=241)
(1)证明:
面
;
(2)证明:
;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cff8c9f12d51b23c4b0beaf228b5c95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/d820d3a6-a003-48ea-92f1-3503dc4d03f0.png?resizew=241)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c7a937699f989b685f285041434000.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b937442ad4cc480adc11bb143559454.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1112ffa328ed486ffc5e4a605eb510e.png)
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2017-05-29更新
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887次组卷
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2卷引用:四川省眉山中学2017届高三5月月考数学(文)试题
7 . 如图,三棱柱
的底面是边长为2的正三角形且侧棱垂直于底面,侧棱长是
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2017/5/19/1690281813671936/1691268657569792/STEM/a313c80be8e74543875d98c1654c870d.png?resizew=204)
(1)求证:
平面
;
(2)求二面角
的大小;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2017/5/19/1690281813671936/1691268657569792/STEM/a313c80be8e74543875d98c1654c870d.png?resizew=204)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547a4b438e2e6687c7cd55ea08bbaae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab6ad3d3e3064fa417a02dba02dbf04.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
您最近一年使用:0次
2017-05-20更新
|
2017次组卷
|
9卷引用:四川省成都石室中学2016-2017学年高二下学期期中考试数学(理)试题
四川省成都石室中学2016-2017学年高二下学期期中考试数学(理)试题四川省成都市双流区双流棠湖中学2019-2020学年高二上学期10月月考数学试题(已下线)2011届河南省商丘市高三第二次模拟考试数学理卷(已下线)2013-2014学年新疆兵团农二师华山中学高二下学期期中理科数学试卷河北省张家口市第一中学2016-2017学年高一(衔接班)6月月考数学试题河北省廊坊市省级示范高中联合体2016-2017学年高一下学期期末考试数学试题黑龙江省齐齐哈尔市第八中学2017-2018学年高二9月月考数学试题河北省廊坊市2018-2019学年高一下学期期末数学试题北师大版(2019) 必修第二册 金榜题名 第六章 立体几何初步 阶段提升课 第六课 立体几何初步
8 . 如图,在四棱锥
中,底面
为矩形,平面
平面
,
,
,
,
为
中点.
![](https://img.xkw.com/dksih/QBM/2018/6/25/1975123199098880/2009033766969344/STEM/312f0a908fb748bdaa21d53c04ce54be.png?resizew=224)
(
)求证:
平面
.
(
)求二面角
的余弦值.
(
)在棱
上是否存在点
,使得
?若求
的值;若不存在,说明理由.
![](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/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c384a1a635268b368907ddd25702c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2018/6/25/1975123199098880/2009033766969344/STEM/312f0a908fb748bdaa21d53c04ce54be.png?resizew=224)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0f2891147526d06af8d1ea41c9015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65bf87f74420270138ed73a2d38ca48.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3f843b83e62bab294988a7ea134a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0519ba613bf121a2c1bc28c948266d74.png)
您最近一年使用:0次
2017-05-18更新
|
1518次组卷
|
7卷引用:四川省成都市龙泉一中、新都一中等九校2016-2017学年高二6月联考数学(理)试题
名校
9 . 已知矩形
和菱形
所在平面互相垂直,如图,其中
,
,
,点
为线段
的中点.
(Ⅰ)试问在线段
上是否存在点
,使得直线
平面
?若存在,请证明
平面
,并求出
的值,若不存在,请说明理由;
(Ⅱ)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cee0f36dc452e58086832c0152b641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a466276f3b4a9a59addcaa6f68b6a850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(Ⅰ)试问在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb9d79cc1792a9ba646459155877f4d.png)
(Ⅱ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fb0ebbc4099aa4897f7337df009ab7.png)
![](https://img.xkw.com/dksih/QBM/2017/5/5/1680387554320384/1683091938205696/STEM/c60902bff6a34887a8211e6343566488.png?resizew=173)
您最近一年使用:0次
2017-05-09更新
|
710次组卷
|
4卷引用:四川省乐山外国语学校2018届高三上(理)练习题(三)数学试题
四川省乐山外国语学校2018届高三上(理)练习题(三)数学试题四川省阆中中学2020届高三全景模拟(最后一考)数学(理)试题河北省武邑中学2017届高三下学期二模考试数学(理)试题(已下线)专题19 立体几何综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)
名校
解题方法
10 . 如图1,在边长为2的正方形
中,
是边
的中点.将
沿
折起使得平面
平面
,如图2,
是折叠后
的中点.
![](https://img.xkw.com/dksih/QBM/2017/4/25/1673324375695360/1675415552786432/STEM/153b6208b7cf47288f286ac048d33164.png?resizew=258)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
平面
;
(2)求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/5e219e263d34f4f714d5e27d8317131d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2017/4/25/1673324375695360/1675415552786432/STEM/82371061c00f4c94b5ddf0e6d76686fc.png?resizew=144)
![](https://img.xkw.com/dksih/QBM/2017/4/25/1673324375695360/1675415552786432/STEM/153b6208b7cf47288f286ac048d33164.png?resizew=258)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816b7f285cc55bbe5bf873538ba87230.png)
您最近一年使用:0次
2017-04-28更新
|
597次组卷
|
3卷引用:四川省宜宾市叙州区第二中学校2019-2020学年高二下学期第二次月考数学(理)试题