1 . 在
中,点F为线段BC上任一点(不含端点),若
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906b86ba6a3a5aa194d5cdc97c6b2d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd31dc2d0967db352574381d66d33fc0.png)
A.3 | B.4 | C.8 | D.9 |
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2024-06-08更新
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741次组卷
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2卷引用:2024年贵州省观山湖第一中学高一年级第二学期5月月考数学试题
解题方法
2 . 在△ABC中,
,P是MC的中点,延长AP交BC于点D.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
________ ;若
,
,则△ABC面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d74b1d0480790400a9223e4437afdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eb017225ca281cdde9cf7edac2ed06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
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3 . 在
中,角
所对的边分别为
,
为平面内一点,下列说法正确的有( )
![](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/1dde8112e8eb968fd042418dd632759e.png)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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解题方法
4 . 如图,已知
是边长为
的正三角形,点
在边
上,且
,点
为线段
上一点.
,求实数
的值;
(2)求
的最小值;
(3)求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eef53cd73eb4a628ca6a95517131b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56fca1cf2e2854fc5e35e9e442cf130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa644477d812c38da6df9e3751468626.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c0df9a608f407b3e07418f16dcf23d.png)
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解题方法
5 . 根据毕达哥拉斯定理,以直角三角形的三条边为边长作正方形,从斜边上作出的正方形的面积正好等于在两直角边上作出的正方形面积之和,现在对直角三角形CDE按上述操作作图后,得如图所示的图形,若
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d23f8845e7753986cdf27ec47ad465c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 如图所示,在
中,点O是BC的中点,过点O的直线分别交直线AB、AC于不同的两点M、N,若
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328e8ec9120d4f382d63802421770a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a10a8252aaca38bed5ab3657e4c122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd93ee03569849295ebde055410d1b84.png)
A.5 | B.9 | C.![]() | D.![]() |
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2024-05-04更新
|
729次组卷
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5卷引用:广东省广州市第八十九中学2023-2024学年高一下学期期中考试数学试卷
名校
7 . 如图,直角梯形
中,
,
,若
为
三条边上的一个动点,且
,则下列结论中正确的是______ .(把正确结论的序号都填上)
的点
有且只有1个;
②满足
的点
有且只有2个;
③能使
取最大值的点
有且只有2个;
④能使
取最大值的点
有无数个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47ad7ef0a17747fc54fe058bcb8d1a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a116da076a45a9fe579bfbdfcbe299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f371d431b6c91972b742c426c8a81ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
③能使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
④能使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55db12bc9a3b7bd2e6decaaea6ba387e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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8 . 平行四边形ABCD中,
,
,
.动点M满足
,
,
,下列选项中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9dab0293dbad92fe84bad6b0d957bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55deaf56eefabb84a18805ab11c7872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f062c1ced859002ba975ae97c27cb608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e2e01346f60857ff635bb766802e57.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() |
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2024-04-29更新
|
618次组卷
|
3卷引用:河北省张家口市张北成龙高级中学2023-2024学年高一下学期3月阶段测试数学试题
名校
解题方法
9 . 在锐角
中,记
的内角
的对边分别为
,
,点
为
的所在平面内一点,且满足
.
(1)若
,求
的值;
(2)在(1)条件下,求
的最小值;
(3)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0dd93e8d3e3bd15eca0e309f931ae8f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5baac0dd8be4c646a32213e3a979f9d3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6894da6183fb8b8e7ac9b9f98cdb82.png)
(2)在(1)条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a442e21ce6d4de5fd2392ad94f7dace3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8954ac84d5a64358d2876a62f2a439b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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10 . 四边形ABCD中,
,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791666b74a5c0260017e12060c3cc06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764b88d918c3b2dca6587af4893ad08b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253374ac677c35bf4d1dc260d688b63b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
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|
276次组卷
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5卷引用:北京市中国人民大学附属中学2023-2024学年高一下学期期中练习数学试题
北京市中国人民大学附属中学2023-2024学年高一下学期期中练习数学试题(已下线)北京市中国人民大学附属中学2023-2024学年高一下学期期中练习数学试题变式题11-15(已下线)专题01 向量基底、四心及其应用(2)-期末考点大串讲(苏教版(2019))黑龙江省大庆市大庆中学2024届高三下学期5月期中数学试题(已下线)2024年天津高考数学真题平行卷(基础)