解题方法
1 .
的内角A,B,C的对边分别a,b,c.已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c35b881ba7db85650a3e6923480d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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2 . 已知
三个内角
,
,
所对的边分别为
,
,
,若
,
,
成等比数列,
,
,
成等差数列,则:(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
__________ ;(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88de527b00d11a61b70679595630975.png)
__________ .
![](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/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21bdea15993d7447c9bee28f7318bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88de527b00d11a61b70679595630975.png)
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2020-04-27更新
|
492次组卷
|
3卷引用:2020届安徽省合肥市高三下学期4月第二次教学质量检测数学(理)试题
名校
解题方法
3 . 锐角
中,角
,
,
所对的边分别为
,
,
,若
,则
的取值范围是______ .
![](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/d4ba711c45a61eb671be43d55af186ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62f140d8587e6e35e01da1bbdefc53e.png)
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2020-04-25更新
|
249次组卷
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2卷引用:2020届安徽省合肥市一六八中学高三上学期第四次模拟考试数学(文)试题
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解题方法
4 . 在
中,角
所对的边分别为
,且
,若
,则
的形状是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f570a35ee91d04ac3587acd8fef3d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b8345cc4492c0b438bd3f2b1718784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-03-25更新
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830次组卷
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5卷引用:2019届安徽师范大学附属中学高三下学期高考前适应性检测数学(文)试题
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解题方法
5 . 在锐角
中,
,
,则
边上的中线
的长的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fc3570fb0b6bb12bc8c81aa5dd083a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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2020-05-29更新
|
299次组卷
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12卷引用:【市级联考】安徽省合肥市2019届高三第一次教学质量检测数学理试题
【市级联考】安徽省合肥市2019届高三第一次教学质量检测数学理试题【市级联考】安徽省合肥市2019届高三一模数学(理)试题【全国百强校】四川省成都外国语学校2018-2019学年高一下学期3月月考数学试题【校级联考】四川省乐山十校2018-2019学年高一下学期半期联考数学试题2020届湖南师范大学附属中学高三上学期第三次月考数学(理)试题四川省宜宾市第四中学校2019-2020学年高一下学期第二次月考数学试题江苏省泰州中学2019-2020学年高一下学期期中数学试题四川省宜宾市叙州区第一中学校2019-2020学年高一下学期期中考试数学试题(已下线)期末综合检测02-2020-2021学年高一数学下学期期末专项复习(苏教版2019必修第二册)苏教版(2019) 必修第二册 过关斩将 第11章 11.2 正弦定理(已下线)易错点08 三角函数与解三角形(已下线)专题3-3解三角形压轴综合小题-3
名校
解题方法
6 . 在锐角三角形
中,角
的对边分别为
,若
,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/6e095436a68d0bf309f48dbe49a772c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031345f8b2b8c802b261f1146b1355fe.png)
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2020-05-28更新
|
1931次组卷
|
5卷引用:安徽省舒城中学2023届仿真模拟卷(一)数学试题
名校
解题方法
7 . 在△ABC中,内角A,B,C的对边分别为a,b,c,若(a+b)sinB=csinC﹣asinA,
,△ABC的面积记为S,则当
取最小值时,ab=_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f002f960ec07ea229ed243e2d991d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec6d62a086edef1e1f0f790d716cd34.png)
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2020-05-16更新
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511次组卷
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6卷引用:【校级联考】安徽省江淮十校2019届高三第三次联考文科数学试题
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解题方法
8 .
中,角
所对的边分别为
,且满足
,
,角
的平分线交
于
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.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/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388b32427dac43d2dbf23b469af697aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5901056b42a05c68f472d826775a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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名校
解题方法
9 . 在
中,若
,且
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa0a018e1621bba5a7fa8df74cae5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
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2020-04-28更新
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1249次组卷
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5卷引用:2019届安徽省蚌埠市第二中学高三下学期4月质量检测数学(理)试题
2019届安徽省蚌埠市第二中学高三下学期4月质量检测数学(理)试题2020届湖南省邵阳市重点学校高三下学期综合模拟考试数学(文)试题考点08 解三角形-2020年【衔接教材·暑假作业】新高三一轮复习数学(文)(人教版)(已下线)专题19解三角形的求解策略解题模板(已下线)第16练 三角函数的综合应用-2021年高考数学(理)一轮复习小题必刷
名校
解题方法
10 . 角A为
的锐角
内接于半径为
的圆,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33012983c8ebaaadc7c13978254311d4.png)
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