名校
解题方法
1 . 作为一种新的出游方式,近郊露营在疫情之后成为市民休闲度假的“新风尚”.我市城市规划管理局拟将近郊的一直角三角形区域按如图所示规划成三个功能区:
区域为自由活动区,
区域规划为小型鱼塘养鱼供休闲垂钓,
区域规划供游客餐饮休息用.为安全起见,预在鱼塘
四周围筑护栏.已知
,
,
,
.
时,求护栏的长度(
的周长);
(2)若鱼塘
的面积是“餐饮休息区”
的面积的
倍,求
;
(3)当
为何值时,鱼塘
的面积最小,最小面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cee975a18902203254aa21d541c671f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f30bb9fbf908f410572cd8e1aea0b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5854b6521f9f19659429add18ac058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bc8fd3cb142574f9efd73deca8dbff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5cf48407af008db11eb4f236691d741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc798f8db4d63d1734e7f47740a5793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
(2)若鱼塘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f30bb9fbf908f410572cd8e1aea0b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
您最近一年使用:0次
7日内更新
|
492次组卷
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3卷引用:江苏省五市十一校2023-2024学年高一下学期5月阶段联测数学试卷
江苏省五市十一校2023-2024学年高一下学期5月阶段联测数学试卷福建省厦门外国语学校2023-2024学年高一下学期第二次月考数学试卷(已下线)专题1 以实际问题为背景的解三角形问题【练】(高一期末压轴专项)
名校
解题方法
2 . 在棱长均为2的正三棱柱
中, E为
的中点.过AE的截面与棱
分别交于点F, G.
(1)若F为
的中点,求三棱柱被截面AGEF分成上下两部分的体积比 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301709b97852b4c2b951cfa2b2cfa2d2.png)
(2)若四棱锥
的体积为
求截面 AGEF 与底面ABC所成二面角的正弦值;
(3)设截面AFEG的面积为
面积为S₁,△AEF面积为
当点F在棱
上变动时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770abdd10660689c605577f9cb6d9db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa717be2a43918b9eb13655f86042a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b828011b4a0be31af4f30d829d7e30b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/18/c1fc03ae-c978-409e-8fa2-9e23147b9838.png?resizew=123)
(1)若F为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5fb47a5caaa26007a7606acf05c52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301709b97852b4c2b951cfa2b2cfa2d2.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eb4a437f9aee581cb2d0fff0d9d588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c181e33261a6c8df1e5291b0a119dc9.png)
(3)设截面AFEG的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431bceebfd7dbb3dcbd0348e486a97fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c9821bd2db0d34acbd7acd0fb2bb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5fb47a5caaa26007a7606acf05c52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17646ce1c1499a928584904d416a2a2.png)
您最近一年使用:0次
名校
3 . 已知平面四边形
,
,
,
,现将
沿
边折起,使得平面
平面
,此时
,点
为线段
的中点.
平面
;
(2)若
为
的中点
①求
与平面
所成角的正弦值;
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/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfac9ab1dc776c9ec076ab2a132fcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c505c02c59313fe0108392a5bf5127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b4e753ef119608188c46a50ec597e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb5255e2159617505e0c87d01437a57.png)
②求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04e376d75882fa61c533dbf33ea6f17.png)
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2024-06-17更新
|
595次组卷
|
13卷引用:江苏省南京市中华中学2023-2024学年高一下学期5月月考数学试卷
江苏省南京市中华中学2023-2024学年高一下学期5月月考数学试卷浙江省湖州中学2021-2022学年高一下学期第二次质量检测数学试题(已下线)高一升高二开学分班选拔考试卷(测试范围:苏教版2019必修第二册)广东省揭阳市普宁市华侨中学2022-2023学年高一下学期5月月考数学试题江西省丰城中学2023-2024学年高一(创新班)上学期第一次段考(10月)数学试题(已下线)第02讲 玩转立体几何中的角度、体积、距离问题-【暑假自学课】2022年新高二数学暑假精品课(苏教版2019选择性必修第一册)广东省广州市华南师范大学附属中学2021-2022学年高一下学期期末数学试题(已下线)高一下学期数学期末考试高分押题密卷(三)-《考点·题型·密卷》湖南省长沙市实验中学2022-2023学年高一下学期期末数学试题专题05 空间直线、平面的垂直-《期末真题分类汇编》(新高考专用)(已下线)高一数学下学期期末押题试卷01-期末真题分类汇编(新高考专用)江西省赣州市第四中学2023-2024学年高二上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8 二面角大小的计算(三)【培优版】
名校
4 . 在
中,
,
,点
是边
的中点,点
为线段
的中点,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c974c20de0e31685d64e26522969e2f.png)
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5 . 如图,正方体
的棱长为2,E是棱
的中点,
是侧面
上的动点,且满足
平面
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1df970d8b2fcbb38bfac1dc33da9179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
A.直线![]() ![]() ![]() |
B.存在点![]() ![]() |
C.平面![]() ![]() |
D.平面![]() ![]() ![]() |
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名校
解题方法
6 . 在
中,
是边
的中点,
是线段
的中点.若
,
的面积为
,则
取最小值 时,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32220fd969663f42cd619f8cc8b355c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e6f0e94393fc6bbd9b4b83ede534ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc0de00cff352df72961a2a135a1125.png)
A.2 | B.![]() | C.6 | D.4 |
您最近一年使用:0次
2024-06-13更新
|
477次组卷
|
3卷引用:江苏省南通市海安高级中学2023-2024学年高一下学期第二次月考数学试题
名校
7 . 已知函数
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
(1)求
的最大值
(2)写出
与
的大小关系,并给出证明
(3)试问
能否作为
三边长?若能,给出证明,并探究
的外接圆的半径是否为定值?若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1044dcf4fba551e1b7fbfeb895ea08c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b692262286e03cc0536598789fab8699.png)
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88fd5c1ef0fc722337a4984834829c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7bb46b41cd3f1f9b5621c20bf7fe07.png)
(3)试问
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b799aaa36edd0d10fc38925ce2e55045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-06-12更新
|
161次组卷
|
2卷引用:江苏省江都中学、江苏省高邮中学、江苏省仪征中学2023-2024学年高一下学期5月联合测试数学试卷
名校
8 . 已知四面体
的各个面均为全等的等腰三角形,且
.设E为空间内任一点,且A,B,C,D,E五点在同一个球面上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da71b0b81d1f86b85b52ab064eebabab.png)
A.四面体![]() ![]() |
B.四面体![]() ![]() |
C.当![]() ![]() |
D.当三棱锥![]() ![]() ![]() ![]() |
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9 . 记
的内角
的对边分别为
已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b45e8ab6a60cf2f5dacd2f8e1922eb2.png)
(1)求角C的大小;
(2)若D是边AB的三等分点(靠近点A![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f231f1180506385a590e8a74f4d75f0f.png)
,设
,
①用
及
表示
;
②求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832a6ae04b25ef0896bd607cdcda60ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b45e8ab6a60cf2f5dacd2f8e1922eb2.png)
(1)求角C的大小;
(2)若D是边AB的三等分点(靠近点A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f231f1180506385a590e8a74f4d75f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edb59103f296751ddb45a1139034897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763cfa01bfe566d183882df89f87eda5.png)
①用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c870ef83e4e9eb140594ffdd7f5600a.png)
②求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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10 . 定义非零向量
的“相伴函数”为
,向量
称为函数
的“相伴向量”(其中O为坐标原点).记平面内所有向量的“相伴函数”构成的集合为S.
(1)设
,求证:
;
(2)求(1)中函数
的“相伴向量”模的取值范围;
(3)已知点
满足:
,向量
的“相伴函数”
在
处取得最大值.当点M运动时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0e4e35cf9b9f97c19e4b72cc2a1b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc54bc56c16baa3643686b85a6130e4.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314bf3721381f67a49fa6a8068f465b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfc9270aef191b473d38ffe9108b339.png)
(2)求(1)中函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bec0705d808bfdd465aa1b585acb628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e0e24323fe73e5d9fc6136219306da.png)
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