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1 . 某居民小区为缓解业主停车难的问题,拟对小区内一块扇形空地
进行改造.如图所示,平行四边形
区域为停车场,其余部分建成绿地,点
在围墙
弧上,点
和点
分别在道路
和道路
上,且
米,
,设
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712389904162816/2714330450247680/STEM/450b263c5a984642a72bb9313abfe3a8.png?resizew=181)
(1)当
时,求停车场的面积(精确到
平方米);
(2)写出停车场面积
关于
的函数关系式,并求当
为何值时,停车场面积
取得最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40b8789cc8d81b3cf64f0b318ab982a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88065e78982ab8a8b15bf573ca21476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc790cfaa59a808c25a7edb95dc29fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259728433d68902065408fb6a34c6d4d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712389904162816/2714330450247680/STEM/450b263c5a984642a72bb9313abfe3a8.png?resizew=181)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a40d2cf43fce0c99dff3470d554eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
(2)写出停车场面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2021-05-05更新
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1334次组卷
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4卷引用:上海市第二中学2020-2021学年高一下学期5月月考数学试题
上海市第二中学2020-2021学年高一下学期5月月考数学试题上海市嘉定区2021届高三二模数学试题(已下线)课时19 正弦定理、余弦定理和解斜三角形-2022年高考数学一轮复习小题多维练(上海专用)(已下线)专题05 解三角形(实际问题)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)
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解题方法
2 . 王老师在做折纸游戏,现有一张边长为1的正三角形纸片ABC,将点A翻折后恰好落在边BC上的点F处,折痕为DE,设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/00ef4286-0b0b-432b-a949-5f845720850f.png?resizew=116)
(1)求x、y满足的关系式;
(2)求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c34eff4d793873d9e812d75d90fd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b9f48b80427d1ec649873cb6aac731.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/00ef4286-0b0b-432b-a949-5f845720850f.png?resizew=116)
(1)求x、y满足的关系式;
(2)求x的取值范围.
您最近一年使用:0次