名校
解题方法
1 . 在
中,角
的对边分别为
已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b640d16b04c89cdd8e853783fc3236c8.png)
.
(1)求角
的大小;
(2)若
,求
的面积;
(3)若
为BC的中点,求AD的长.
![](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/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b640d16b04c89cdd8e853783fc3236c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a82bc457574fe3939a95bcef6bc4f6f.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0ebcdb0bb85d94c3834d9c910dc56c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be394823f4d9c69053e3186db87b6251.png)
您最近一年使用:0次
2024-06-03更新
|
1685次组卷
|
4卷引用:江苏省南京市建邺高级中学2022-2023学年高一下学期期末数学试题
(已下线)江苏省南京市建邺高级中学2022-2023学年高一下学期期末数学试题陕西省咸阳市实验中学2023-2024学年高一下学期第二次月考数学试卷重庆市乌江新高考协作体2023-2024学年高一下学期5月期中数学试题浙江省绍兴市第一中学2024届高三下学期5月模拟数学试题
解题方法
2 . 在
中,内角A,B,C的对边分别为a,b,c,已知
.
(1)求A;
(2)若
的面积为
,周长为18,求a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7925785d0026bb7a38af460b76201e.png)
(1)求A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604d037b88148502a5608e0285c76f35.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,内角
的对边分别是
,且
,
.
(1)求角B;
(2)若
,求边
上的角平分线
长;
(3)若
为锐角三角形,求边
上的中线
的取值范围.
![](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/40dceaac09ee5587cdf4b09d9b82b692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
(1)求角B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e658a5aee39ea75e9076aed714ee451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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2024-04-01更新
|
1905次组卷
|
4卷引用:安徽省定远中学2023-2024学年高一第六次阶段检测数学试卷
安徽省定远中学2023-2024学年高一第六次阶段检测数学试卷安徽省合肥市中国科学技术大学附属中学2023-2024学年高一下学期第一次月考数学试题湖南省常德市汉寿县第一中学2023-2024学年高一下学期3月月考数学试题(已下线)第9章:解三角形章末综合检测卷(新题型)-【帮课堂】(人教B版2019必修第四册)
名校
解题方法
4 . 在
中,角A,B,C的对边分别为a,b,c,已知
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9409f77bc4887211d6ac8761533ed484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d93aba0df8a4e02b771d33d92541794f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-31更新
|
1296次组卷
|
7卷引用:模块五 专题四 全真能力模拟2(高一期中模拟)
(已下线)模块五 专题四 全真能力模拟2(高一期中模拟)江苏省如皋中学2023-2024学年高一下学期教学质量调研(一)数学试题江苏省连云港市东海高级中学2023-2024学年高一下学期3月教学质量调研数学试题江苏省宿迁市泗阳县桃源路中学2023-2024学年高一下学期4月月考数学试题(已下线)高一 模块3 专题1 第4套 小题入门夯实练(苏教版)(已下线)模块五 专题4 全真能力模拟2(北师版高一期中)(已下线)9.1.2 余弦定理-【帮课堂】(人教B版2019必修第四册)
名校
解题方法
5 . 如图,在
中,点D在边BC上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/c2bee236-5410-4fbe-b480-c471936550b9.png?resizew=162)
(1)若
,
,
,求AB;
(2)若
是锐角三角形,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cabcef1cee1213140371c499339864.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/c2bee236-5410-4fbe-b480-c471936550b9.png?resizew=162)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30befab772a51c5727293a5cd056879e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe7a93172d308a58200e3c722fe1072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d34198d24fd3ee8dfc0f81a5479b6d.png)
您最近一年使用:0次
2024-03-29更新
|
1334次组卷
|
3卷引用:专题1.11解三角形常考大题归类-重难点突破及混淆易错规避(人教A版2019必修第二册)
(已下线)专题1.11解三角形常考大题归类-重难点突破及混淆易错规避(人教A版2019必修第二册)青海西宁市湟川中学2023-2024学年高三下学期开学考试理科数学试题河南省郑州市宇华实验学校2023-2024学年高二下学期3月月考数学试题
名校
解题方法
6 . 在
中,内角
,
,
的对边分别为
,
,
.已知
.
(1)求
;
(2)若
,且
边上的高为
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/58cbb92bcf5ca2d8bcda600565436ea8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541b16fdc230c1bf727de73ba0aea2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-03-22更新
|
2926次组卷
|
4卷引用:专题1.11解三角形常考大题归类-重难点突破及混淆易错规避(人教A版2019必修第二册)
(已下线)专题1.11解三角形常考大题归类-重难点突破及混淆易错规避(人教A版2019必修第二册)山东省济南第一中学等校2024届高三下学期阶段性检测(开学考试)数学试题湖南省岳阳市湘阴县知源高级中学等多校2023-2024学年高二下学期入学考试数学试题(已下线)第1套 全真模拟篇 【模块三】
名校
7 . 在
中,角A,B,C的对边分别为a,b,c.已知
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/867779cd-c585-4ca5-8784-c4e59e74fe75.png?resizew=158)
(1)求b的值;
(2)在边BC上取一点D,使得
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09921d9904335a83078262ce62a473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958b7b27a401f6b8352ae36e6e26d01f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/867779cd-c585-4ca5-8784-c4e59e74fe75.png?resizew=158)
(1)求b的值;
(2)在边BC上取一点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41350023da8aacd62eaae8599c6009cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
您最近一年使用:0次
解题方法
8 . 记
的内角
的对边分别为
.已知
.
(1)当角
最大时,求其最大值并判断
的形状;
(2)若
的中线
,求
面积的最大值.
![](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/6a940daedfed91261cb2928b26c0395d.png)
(1)当角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20d48c9814ca43a20a7a488337e93a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
9 . 在
中,内角
的对边分别是
,已知
.
(1)求
;
(2)若
,求
的面积.
![](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/5bd29bfbb98e245c9ff2de740b13e62a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024高二·全国·专题练习
解题方法
10 . 如图,平面四边形
中,
与
交于点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b596e35b42cd63d83a861dd9f586b8.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a503772d15eea69d1c8739c6b1c3fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2f554699faf6ebf48d65bcfb5dc15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b596e35b42cd63d83a861dd9f586b8.png)
您最近一年使用:0次