名校
解题方法
1 . 露天电影就是在室外放的电影,在我国七十年代开始流行,观看者不需要买票,可以随意进场观看.已知某地在播放露天电影,幕布上、下边缘距离为d米,幕布的下方边缘距离观众水平视线上方a米,为使看电影时的视角(即从幕布上、下边缘引出的光线在人眼光心处所成的夹角)最大,应坐在距离幕布___________ 米处.(用a,d表示)
您最近一年使用:0次
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2 . 某足球场长
、宽
,球门宽
,球门
位于底线中央.当足球运动员沿斜向直线
带球突破时,
为球场边线的中点,
为底线上一点,路线如图,若
;
(1)求
;
(2)若
是球员起脚射门的点,试问
是多少时,
对球门的张角最大?并求此时
到底线的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6035c75e34399bcb778fce17ae5065c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8badcdb1e5621f0ac4d9272041185a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e17ee14bd91bfff409c06fd434f6745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca25052dcb5bb21dabf0a3bfafc123.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/84400f40-7804-44dc-a301-35ede2894c02.png?resizew=168)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f17893bd11789b87c680f2f9480ff7d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297cc0f9553ef0c5b537c5581eee934c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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3 . 如图,长方形
中
,
将它分成3个小正方形,下列讨论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388c8d60228e3157c161a4d41162a808.png)
A.若![]() ![]() |
B.若P为长方形ABCD内动点,![]() ![]() ![]() ![]() |
C.若P在线段AC上(不包括端点),则![]() ![]() |
D.![]() ![]() ![]() |
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4 . 如图所示,在等腰直角
中,
为线段
的中点,点
分别在线段
上运动,且
,设
.
,求
的取值范围及
;
(2)求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d00fb6bc960a8ae7821a2c746d05a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fb7ec4aa413693f4ecae59fe0e2084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa94bd35e038c38c4ed95bb757ea688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/867d00157025729b6a66380810466edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2596a01da9b64b19921e280827f29a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5224a7da7fe6bc28971ce4c277f88588.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
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2024-02-15更新
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767次组卷
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6卷引用:重庆市南开中学校2023-2024学年高一下学期阶段测试数学试题
重庆市南开中学校2023-2024学年高一下学期阶段测试数学试题山东省胶州市第一中学2023-2024学年高一下学期3月月考数学试题山东省济南市2023-2024学年高一上学期1月期末数学试题(已下线)5.7三角函数的应用(已下线)高三数学考前冲刺押题模拟卷01(2024新题型)(已下线)第八章:向量的数量积与三角恒等变换章末重点题型复习(2)-同步精品课堂(人教B版2019必修第三册)
名校
解题方法
5 . 如图,在边长为6的正方形
中,
,
且
,
.
的值;
(2)若向量
,点
在
的内部(不含边界),求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b630e42be95afffe05ebd265f9d8257b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3d1083a956315db7b85d1e0f9aec2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef966cdd137b3b10e290201b4d17542e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c98ce1bd8a5ffe3e18b4033d4ade5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72286d04bc2b78167b5231bd7945cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d55eaf3e5af51084ff52fecdad028d.png)
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2024-03-12更新
|
758次组卷
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5卷引用:江苏省连云港高级中学2022-2023学年高一下学期第一次月考数学试卷
江苏省连云港高级中学2022-2023学年高一下学期第一次月考数学试卷(已下线)模块二 专题3 平面向量中的范围与最值问题(已下线)模块二 专题3 平面向量中的范围与最值问题(苏教版)(已下线)模块二 专题5 平面向量中的范围与最值问题(北师大版)四川省内江市威远中学校2023-2024学年高一下学期期中考试数学试题
6 . 已知直线
与抛物线
交于
,
两点(
的横坐标大于
的横坐标).
(1)求
,
的坐标;
(2)点
,
是抛物线
上不同于
,
的两点,直线
,
的倾斜角互补,直线
与直线
相交于点
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5130ca4ce75390124b05699c5a14aa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd2d3bb3d0ad116392117cf849de8b07.png)
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7 . 如图,在
中,
,
在
的外部,
,
.
(1)求
;
(2)若DA与FC的延长线交于点P,且
,
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8ed9f2c1fa682f8e2cc0983dfec4fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00f89f6fd05f521d05129244aa4e5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/25/0fbf7050-9818-45a3-8e41-509b5e135a0f.png?resizew=173)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
(2)若DA与FC的延长线交于点P,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e82ed5f510640280fffef787a316add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15820fc22dd1be191d7d8667c2a4325b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
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2023-11-03更新
|
372次组卷
|
3卷引用:江苏省徐州市普高联考(求实高中等)2023-2024学年高三上学期测评(三)数学试题
解题方法
8 . 已知
.
(1)设
,求
的值;
(2)若
是方程
的实根,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1600f27d3dfbfb9a458b39a2ac9dd1.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320377d3aeafe6006166caa6aa6901f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a0d23ef2743660e90a21158a22e696.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39502d66da65c91806446cfc94e815c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0277154fc2f398a18762f17bb394d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40cd823c6f90b18423c18b0bf4bf9f4.png)
您最近一年使用:0次
2023-10-12更新
|
175次组卷
|
2卷引用:辽宁省部分学校2023-2024学年高三上学期10月月考数学试题
解题方法
9 . 海安市实验中学校训镶嵌在墙壁上,上端距离地面15米,下端距离地面11米,现小明同学要拍摄校训照片,相机镜头离地面1米,要使得校训的上下端与镜头构成的视角
最大,问相机镜头距离墙面应___________ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/6e458e2d-a630-4c67-bd69-0a1946de42e6.png?resizew=218)
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解题方法
10 . 某公司为宣传其产品,设计一大型广告立牌置于公司楼下显目位置,广告立牌垂直于地面,其设计图如下所示,由直角
和以BC为直径的半圆拼接而成,
,AB固定于地面,且
,点P为半圆上一点(异于B,C两点),四边形ABPC为梯形,
,该广告立牌右侧有一条垂直于AB的直线小道L(直线小道路面与地面平齐),与AB的延长线交于点D,且
.
(1)若沿该造型外部边缘增加铁丝加以固定,求铁丝长度(即
)的最大值及此时
的值;
(2)若
,行人M(视为质点,行人高度忽略不计)沿直线小道L向该广告立牌走近,当对底边AB观察的视线所张的角最大时,求从M处观察P点时仰角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25986df978766e4984d7d6a7f9660e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb4347d43df28c6658900c7c6b3f746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d8bbd60cb5f18cd78607f47b01d240.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/40323774-a953-430d-b812-e6ee3d72a9e7.png?resizew=238)
(1)若沿该造型外部边缘增加铁丝加以固定,求铁丝长度(即
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf9b4e9e1bd17a53c6a93afba89750a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acc3d97d68adaa0869cb814b5d76337.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c646c683fbe522edb7ea54fd3ad873d.png)
您最近一年使用:0次
2023-09-23更新
|
232次组卷
|
3卷引用:湘豫名校联考2023-2024学年高三上学期一轮复习诊断考试(一)数学试题