1 . 三棱锥
中,
平面
,
,
,并且
是直角.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/00c24e80-c7c0-456e-97a3-6fe819ef484d.png?resizew=175)
(1)求二面角
所成角的余弦值;
(2)若
,
,
上各取一点
,
,设
(
),当
为何值时,平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d535bfd65eb04a29d64425d54b2acf86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c184f8272d86497134b0bc225c8645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/00c24e80-c7c0-456e-97a3-6fe819ef484d.png?resizew=175)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b787fcc1da13b8665a7d6a41a75328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0639327721a50d83bee4fdc44a9c468f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc981f1af8f5e82d51da9e6f139c177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540ccd15435aa2d59e809d6a28fb2467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
您最近一年使用:0次
名校
2 . 如图,设
与
为两个正四棱锥,且
,点P在线段AC上,且
.
(1)记二面角
,
的大小分别为
,
,求
的值;
(2)记EP与FB所成的角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5ba482836565abad208665cf7b9972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cec68a1111227d3b2aa12b291dc8216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c59ab7424bf77688eb767f7642efd70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/26cd9d84-8989-48f8-9ed2-0bca7835803f.png?resizew=165)
(1)记二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325fbf7c39864c58789bc8ebe853dbe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47342449ca1a78a7550975a7589003c5.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/bd9f81357f842b71ea97d5174ec526a1.png)
(2)记EP与FB所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
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2023-11-28更新
|
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4卷引用:广东省广州市华南师大附中2024届高三上学期大湾区数学预测卷(一)
广东省广州市华南师大附中2024届高三上学期大湾区数学预测卷(一)安徽省示范高中培优联盟2023-2024学年高三上学期秋季联赛数学试题吉林省长春市朝阳区吉大附中实验学校2024届高三下学期开学考试数学试题(已下线)第二章 立体几何中的计算 专题一 空间角 微点10 二面角大小的计算综合训练【培优版】
名校
3 . 如图,
且
,
且
且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/c2eaca40-bdbe-4235-80b6-e2bb51c4fd55.png?resizew=159)
(1)若
为
的中点,
为
的中点,求证:
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)若点
在线段
上,且直线
与平面
所成的角为
,求线段
的长.
![](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/53177dff9e6b7b1b6921333c71a22b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71995b49b81d19bf9037517499b31431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d156737daa15bf9c634e9eac1687ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615dea62b4775453e2f0330c4d3e5719.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/c2eaca40-bdbe-4235-80b6-e2bb51c4fd55.png?resizew=159)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e51817ee1ebf17c73ed21171bcfc5b5.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cfd99a702ee24f9ef94e4b6f50101f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
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2023-11-17更新
|
926次组卷
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2卷引用:2024届天津市十二区县重点学校一模模拟考试数学试卷
名校
4 . 已知四棱锥的底面
为等腰梯形,
,
,
,
平面
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4710f75c66f19825a3e44b48f78bbac.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b60870baa5e3fbc33a749aa5f0a94be.png)
您最近一年使用:0次
2023-11-12更新
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1835次组卷
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6卷引用:浙江省温州市普通高中2024届高三上学期第一次适应性考试数学试题
名校
5 . 如图,三棱柱
的底面是等边三角形,
,
,D,E,F分别为
,
,
的中点.
上找一点
,使
平面
,并说明理由;
(2)若平面
平面
,求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4195ed4a942092a90895d5e70e713a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9f99fb3252a4b3b7a62e8a675ddce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60d66204e1abc17bd01749f187f8050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce04b35c265cc9c48b60204bd2f718ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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2023-10-30更新
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10卷引用:云南省昆明市第一中学2024届高三第三次双基检测数学试题
云南省昆明市第一中学2024届高三第三次双基检测数学试题“七省联考”2024届高三考前猜想数学试题(已下线)专题09 立体几何(5大易错点分析+解题模板+举一反三+易错题通关)-2河南省商丘市虞城县第一高级中学2024届高三上学期第三次月考数学试题山东省济南市2023-2024学年高二上学期期末质量检测模拟数学试题河南省漯河市2024届高三上学期期末质量监测数学试题江西省丰城中学2023-2024学年高二上学期1月期末数学试题(已下线)专题7.3 空间角与空间中的距离问题【九大题型】(已下线)第二章 立体几何中的计算 专题一 空间角 微点9 二面角大小的计算(四)【培优版】(已下线)信息必刷卷05(江苏专用,2024新题型)
名校
6 . 如图,圆锥
的底面圆
的直径
,母线长为
,点
是圆
上异于
,
的动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() |
B.圆锥![]() ![]() |
C.![]() ![]() |
D.若点![]() ![]() ![]() |
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7卷引用:云南省昆明市第一中学2024届高三第三次双基检测数学试题
云南省昆明市第一中学2024届高三第三次双基检测数学试题重庆市北碚区西南大学附中2024届高三上学期11月模拟测试数学试题广东省东莞市虎门中学等七校2024届高三上学期联考数学试题辽宁省“创新发展教研联盟”2024届高三第一次联考数学试题福建省莆田市第二十五中学2023-2024学年高三上学期期中数学试题(已下线)8.3.2圆柱、圆锥、圆台、球的表面积和体积(分层作业)-【上好课】(已下线)第八章 本章综合--汇总本章方法【第三课】“上好三节课,做好三套题“高中数学素养晋级之路
名校
解题方法
7 . 如图,在圆锥
中,
是底面的直径,且
,
,
,
是
的中点.
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4075e8c66903921cb2880bea61e37ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5864483b7a92e2936cf128482984ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5db30bb3d52a2781a8159ab1c76deb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2824a8a2efd44fc7e3997b2b41991408.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e91c2c2b11ebdaebe88d02c2df3ae9.png)
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2023-10-29更新
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926次组卷
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7卷引用:内蒙古赤峰市林东第一中学2023届高三5月数学模拟考试题
内蒙古赤峰市林东第一中学2023届高三5月数学模拟考试题内蒙古赤峰市林东第一中学2023届高考数学模拟试题湖南省衡阳市第八中学2024届高三适应性考试数学试题上海市虹口区2023届高三下学期期中数学试题(已下线)专题07 空间向量与立体几何(已下线)专题09 立体几何(5大易错点分析+解题模板+举一反三+易错题通关)-2(已下线)专题15 立体几何解答题全归类(9大核心考点)(讲义)-1
名校
8 . 如图,在三棱锥
中,
平面
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91ac38719ac70e0597a72e7f0deceac.png)
.
(1)求点
到平面
的距离;
(2)设点
为线段
的中点,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0595498034037b58538f8056dbc6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91ac38719ac70e0597a72e7f0deceac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd516e4b396722941982a389ee6e524c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/a1dcce74-de00-4502-b86e-200dd621794c.png?resizew=109)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0f73cf7ab0c2a8a0099cb2873c81f4.png)
您最近一年使用:0次
9 . 如图,在四棱锥
中,底面
为正方形,侧面
是正三角形,侧面
底面
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/e639e37a-dde7-41eb-a07f-350267a0374c.png?resizew=176)
(1)求证:
平面
;
(2)设正方形
的边长为
,求侧面
与底面
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/852aabd89edffc1b94344ff3f1f31ccd.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/e639e37a-dde7-41eb-a07f-350267a0374c.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)设正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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名校
10 . 如图,在三棱柱
中,
平面
为正三角形,侧面
是边长为2的正方形,
为
的中点.
平面
;
(2)取
的中点
,连接
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3cfd6b6a7e911d10d1a4bed9ca5e749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b9a3f868837555eb40234b3375f4a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4550b5eebb311298fb89d44a913bedc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0715b04d494f97e6efe2ff694388c73.png)
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2023-10-13更新
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9卷引用:陕西省汉中市2024届高三上学期第二次校际联考模拟预测理科数学试题
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