2024高一下·上海·专题练习
1 . 如图,有一个扇环形花圃
,外圆弧的半径是内圆弧半径的两倍,周长为定值
,圆心角的绝对值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/01c8d834-db44-4a6d-8ad1-9d09e7e389b8.png?resizew=155)
(1)当
为多少弧度时,扇环面积最大,并求出最大面积;
(2)当
时,求弧
的中点
到弦
的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400d0f1815cb5953b1221ce690caef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a998a7d4d980e848ee050b706480ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/01c8d834-db44-4a6d-8ad1-9d09e7e389b8.png?resizew=155)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb80c0e955d5be2a4af9006d36347b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
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解题方法
2 . 已知直角梯形
,
,
,
,扇形圆心角
,
,如图,将
,
以及扇形
的面积分别记为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36477401af8ec19b82d682ab184753a2.png)
的表达式,并指出其大小关系(不需证明);
(2)用
表示梯形
的面积
;并证明:
;
(3)设
,
,试用代数计算比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36572a10fcb483a9abb63a5039e09ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201339005285d682fbc2cf65fbabddd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4138f6987cd2ee9e56b2ac80e84f9e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ba3f676fda6a2aaaa55c9f32874a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36477401af8ec19b82d682ab184753a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36477401af8ec19b82d682ab184753a2.png)
(2)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fec41d46ca97d3e900ef1db5a1f002c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cc4a85bbf152031dc8ebd182e44ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be31dfad4f16cf1f2158b3011e3b68b9.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e8d7d33749979b7d7acc17532d86b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7787a01998f68ccc931c00ccb475f6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bf4af3d4543cada4b52871ac9dfb1a.png)
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6卷引用:6.2 常用三角公式-高一数学同步精品课堂(沪教版2020必修第二册)
(已下线)6.2 常用三角公式-高一数学同步精品课堂(沪教版2020必修第二册)上海市复旦大学附属中学2022-2023学年高一下学期期末数学试题(已下线)高一上学期期末考试解答题压轴题50题专练-举一反三系列上海市华东师范大学第二附属中学2023-2024学年高一下学期3月月考试题(已下线)专题06 期末解答压轴题-《期末真题分类汇编》(上海专用)(已下线)专题04 三角-《期末真题分类汇编》(上海专用)
21-22高一上·江苏南通·期中
3 . 如图所示,直角
中,
,
将
绕着点A顺时针旋转到
,再将
绕着点
顺时针旋转到
,点
、
均在AB所在直线上,则B点运动的轨迹长度为______
,第二次旋转时,边
扫过区域
图中阴影部分
的面积为_________ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d216cf121ea0cf9ef863cad246db93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9723a6e093c297b001436e8932b1820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56e036823b96ab96c32fd6d7c24ee70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dc5667bbf205d6c6c6d189ebda123e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dc5667bbf205d6c6c6d189ebda123e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d542d6a10970a4f6ca6a495e6b9c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d216cf121ea0cf9ef863cad246db93.png)
![](https://img.xkw.com/dksih/QBM/2022/1/24/2905555348463616/2947547460124672/STEM/73bdc79131244b769d833a2a7c6a4c1c.png?resizew=288)
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4 . 中国早在八千多年前就有了玉器,古人视玉为宝,玉佩不再是简单的装饰,而有着表达身份、感情、风度以及语言交流的作用.不同形状、不同图案的玉佩又代表不同的寓意.如图1所示的扇形玉佩,其形状具体说来应该是扇形的一部分(如图2),经测量知
,
,
,则该玉佩的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898374686613504/2901479008223232/STEM/72401886-0846-4996-aa7e-a5cf34bd75bc.png?resizew=309)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bedaadb4e782586eb5f46048523b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898374686613504/2901479008223232/STEM/72401886-0846-4996-aa7e-a5cf34bd75bc.png?resizew=309)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9卷引用:第六章 三角(单元重点综合测试)-单元速记·巧练(沪教版2020必修第二册)
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解题方法
5 . 如图所示,一只小蚂蚁正从圆锥底面上的点A沿圆锥体的表面匀速爬行一周,又绕回到点A,已知该圆锥体的底面半径为
,母线长为
,试问小蚂蚁沿怎样的路径如何爬行,才能最快到达点A?并求出该路径的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a167970b998655367e3fb81e7cafe883.png)
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6 . 某设计师为天文馆设计科普宣传图片,其中有一款设计图如图所示.
是一个以点O为圆心、
长为直径的半圆,
.
的圆心为P,
.
与
所围的灰色区域
即为某天所见的月亮形状,则该月亮形状的面积为___________
.
![](https://img.xkw.com/dksih/QBM/2021/5/18/2728774981804032/2738765473423360/STEM/52ca79fe-372c-441c-ae04-8b4d37dc9330.png?resizew=244)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a1fdbb9fccffee9321fd4467e06e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e4b0ddfa5aec71d6df83e574b56150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3136aff5f3094f7645d582f01d7a692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69078db16b866e9b9d9eb2ea82c387bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39f27b4e324e6e7b8eb6a42e72dad00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a1fdbb9fccffee9321fd4467e06e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69078db16b866e9b9d9eb2ea82c387bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b696cdeacd2101333774cec22dca5b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c526c3400e61e9eb8e0998f4dcb8f0.png)
![](https://img.xkw.com/dksih/QBM/2021/5/18/2728774981804032/2738765473423360/STEM/52ca79fe-372c-441c-ae04-8b4d37dc9330.png?resizew=244)
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8卷引用:课时17 任意角的三角比-2022年高考数学一轮复习小题多维练(上海专用)
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