2011·江苏南京·一模
名校
1 . 在
中,角
的对边分别是
,且
成等差数列.
(1)若
,
,求
的值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65e823f953fb2c05d606c84861321b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd924c2a35fdc08f726369138f2ed26d.png)
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名校
2 . 如图,在
中,
、
是
上的两个三等分点,
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/aeaf5dd0466d8240817a00b8949840b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
![](https://img.xkw.com/dksih/QBM/2019/11/11/2331569356587008/2333027056861186/STEM/6a36e7b05ca144e094dd8f9c77ef8a68.png?resizew=165)
您最近一年使用:0次
2019-11-13更新
|
218次组卷
|
2卷引用:江苏省常州市北郊高级中学2023-2024学年高一下学期3月学情调研数学试卷
3 . 如图,在直角梯形
中,
,
,
,
,点
,
分别在线段
,
上(均不与
重合),且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/dbed3275-17df-4fe1-91a2-f65467f2b66a.png?resizew=115)
(1)求
;
(2)求边
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67ef50cee00745ceeb2628316722f73.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3cdec5a32929aa8e52ee509d94e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb703bd180c228b06f8f9965f81dfb07.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/dbed3275-17df-4fe1-91a2-f65467f2b66a.png?resizew=115)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2276de3d5dea1976ba6a745e375d4cfd.png)
(2)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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名校
解题方法
4 . 在三角形ABC中,
,
(1)求
的值;
(2)若
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c61ab6ffe2c0c75f3f58d2b9e166147.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2d9699db1fa962696d09998352abcd.png)
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5 . 扇形
中,弦
为劣弧
上的动点,
与
交于点
,则
的最小值是_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571f8dfb1eb003438f27bab2324140ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69f81a8e5731509c6f6f5b99525890e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6337390a597688ce91e635b43889fed.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,
中,
在边
上,且
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b15bf804105d7f1f09aa9a3f99f5918.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ab13ef156d034b710d811e09b0be34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072e3c5592c9bf835725dd3981fd275e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b15bf804105d7f1f09aa9a3f99f5918.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/477b787f-86d8-4dad-8c5b-3dd81d93825c.png?resizew=180)
您最近一年使用:0次
7 . 在等腰梯形
中,已知
,
,
,动点
和
分别在线段
和
上,且
,
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c68e1a5d0b83244e2e2eb45bae2cab.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e513fd59e59bda50100de1b4571a235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd1b9ef59b41bcb03ad4a62ba5e75f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f651a0f32c32d43a5e629e6e3fd479.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483334701056/1572483340648448/STEM/fbb912f2e4e94cdc9322866ce6d26c05.png?resizew=176)
您最近一年使用:0次