名校
1 . 已知a,b,c分别为
内角A,B,C的对边,向量
,
,且
,
,则
周长的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bfc2b6e9a3fe0a3cb5da0c7a5620681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3554659c22035ba2f3e817ca79874efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401078c16ea92130b47f728bea699c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1902376c22f714090ccaadf17365363e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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2019-11-14更新
|
556次组卷
|
2卷引用:安徽省示范高中名校2019-2020学年高三上学期10月月考数学(理)试题
名校
2 . 《益古演段》是我国古代数学家李冶(1192~1279)的一部数学著作.内容主要是已知平面图形的信息,求圆的半径、正方形的边长和周长等等.其中有这样一个问题:如图,已知
,点
、
分别在
的两个边上移动,且保持
、
两点间的距离为
,则点
、
在移动过程中,线段
的中点
到点
的最大距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/08348997-8b36-485f-9110-1b0e441fdf4f.png?resizew=168)
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2019-11-06更新
|
549次组卷
|
7卷引用:百校联盟2019-2020学年高三上学期10月尖子生联考数学理科试题
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3 . 已知
,
,
分别是
内角
,
,
的对边,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aeca7b068a5b815e285455ee679b5a4.png)
,
,则
周长的最小值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aeca7b068a5b815e285455ee679b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0040305eb77da9b74b2e12c354da016f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffce8ee90f1a3aa64ae5444dffb6e0cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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2019-07-04更新
|
555次组卷
|
3卷引用:2020届江西省南昌十中高三上学期摸底调研模拟数学(理)试题
名校
4 . 如图,在矩形ABCD中,边AB=5,AD=1,点P为边AB上一动点,当∠DPC最大时,线段AP的长为__________ .
![](https://img.xkw.com/dksih/QBM/2019/6/17/2227789632307200/2233441887059968/STEM/3143c55b-cd23-4dd2-be0a-14f2778d626a.png?resizew=310)
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名校
5 . 已知函数
,若对任意的
,长为
的三条线段均可以构成三角形,则正实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4da4a656f0de184dc1c9a288a3ab264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97833481dfa557b7b12a0954e8429101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355b727b0d384cf6026ce2146443d744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
6 . 在
中,角
的对边分别为
,若
,且
的面积
,则
的最小值为_______
![](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/abc7bd15c867b729cd44ef29a04b7880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b391a121bdc5a8854bbcff7dc5c634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
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7 . 长方体
中,
,
,
,
是棱
上的动点,则
的面积最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1226f2f010f33e55ed5e889084c6b99e.png)
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2019-05-09更新
|
629次组卷
|
5卷引用:【市级联考】广东省汕头市2019届高三第二次模拟考试(B卷)数学(文)试题
【市级联考】广东省汕头市2019届高三第二次模拟考试(B卷)数学(文)试题(已下线)【南昌新东方】江西省南昌三中2020-2021学年高二上学期10月第一次月考数学(文)试题福建省泉州市永春一中2019届高三高考数学(文)前适应性试题辽宁省实验中学2023-2024学年高二上学期期中数学试题山东省临沂市平邑县平邑县第一中学2023-2024学年高三上学期11月月考数学试题
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8 . 为了竖一块广告牌,要制造三角形支架,如图,要求
,
的长度大于1米,且
比
长0.5米,为了稳固广告牌,要求
越短越好,则
最短为____________ 米
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dd9f57b1ef0bfc11db9c9d975a2bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/a06255da-a810-4df2-80f1-0075fb801337.png?resizew=155)
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2019-05-07更新
|
446次组卷
|
2卷引用:上海市复旦大学附属中学2018-2019学年高一下学期期中考试数学试题
名校
9 . 在锐角
中,角
所对的边为
,若
.且
,则
的取值范围为_____ .
![](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/6565018e818c0519d1f84bae9f009556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
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2019-05-04更新
|
1126次组卷
|
6卷引用:【校级联考】山东省郓城一中等学校2019届高三第三次模拟考试数学(理)试题
名校
10 . 在
中,内角
所对的边分别为
,已知
,当
的面积最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
__________ .
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e2e3098f6285e64d5b7296f4250928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
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