名校
1 . 记
的内角
的对边分别为
,分别以
为边长的三个正三角形的面积依次为
,已知
.
(1)求
的面积;
(2)若
,求
.
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4e20ea341827ce5f9552daee39462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63d9b441f6d50079ac4eeb8ff0aca8b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0b1953dbd7c85eb8ebda18e748d745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2023-06-04更新
|
1386次组卷
|
5卷引用:吉林省通化市梅河口市第五中学2023届高三下学期第七次模拟考试数学试题
吉林省通化市梅河口市第五中学2023届高三下学期第七次模拟考试数学试题江苏省常州市华罗庚中学2022-2023学年高一创新班下学期期末数学试题福建省诏安第一中学2022-2023学年高一下学期期末冲刺数学试题(已下线)专题08 解三角形-2(已下线)第04讲 解三角形(练习)
名校
解题方法
2 . 已知
中角
的对边分别为
,
.
(1)求
;
(2)若
,且
的面积为
,求
周长.
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ef8a60a507b0164f156c1422f7435d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81eedf404aeb0a2310a310910f73d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-05-27更新
|
1978次组卷
|
5卷引用:吉林省东北师范大学附中2023届高三下学期七模数学试题
名校
解题方法
3 . 已知离心率为
的椭圆
的左焦点为
,左、右顶点分别为
、
,上顶点为
,且
的外接圆半径大小为
.
(1)求椭圆
方程;
(2)设斜率存在的直线
交椭圆
于
,
两点(
,
位于
轴的两侧),记直线
、
、
、
的斜率分别为
、
、
、
,若
,则直线l是否过定点?若过定点,求出该定点的坐标;若不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745d61fea34d786a64a45406a5a1bd71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设斜率存在的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec18c028746b73be7503ff6ff458a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3307e11f7e6896e32aa510bbed949ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f79855411eca54c6d8a23f955e07058.png)
您最近一年使用:0次
4 .
中,角
的对边分别为
,且
.
(1)求角
;
(2)若
的外接圆半径为
,求
的周长的最大值.
![](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/942cb753a7990cbf52c6c292048fb2c0.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-05-14更新
|
958次组卷
|
3卷引用:吉林省吉林市2023届高三第四次调研考试数学试题
5 . 已知圆
的圆心在抛物线
上运动,且圆
过定点
,圆
被
轴所截得的弦为
,设
,
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6519ac7f0b537c08e8c43faad2abf4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad28374d45ca7b6319be74c29f74be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba498a1c73700f235c701d84932aba9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c26ee0f01990cd336dc2452014ea0b.png)
您最近一年使用:0次
6 . 在①
;②
;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f91e922fafa71d98d7d5f1e2facc8f.png)
这三个条件中任选一个,补充在下面的问题中,并解答问题.
在
中,内角
的对边分别为
,且满足__________.
(1)求角
;
(2)若
的面积为
的中点为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3e9822719452aa689b19ab8f949c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb10549903fa439f3308f57ef1dc5ce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f91e922fafa71d98d7d5f1e2facc8f.png)
这三个条件中任选一个,补充在下面的问题中,并解答问题.
在
![](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)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba7bd890fa4ab1db1fbdfc985b72e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2023-05-13更新
|
1938次组卷
|
3卷引用:吉林省实验中学2022-2023学年高三下学期模拟考试(六)数学试题
名校
解题方法
7 . 已知函数
,且
.
(1)求
的最大值;
(2)从①②中任选一个作答.若选择多个分别作答.按第一个解答计分.
①
为函数
图象与
轴的交点,点
,
为函数
图象的最高点或者最低点,求
面积的最小值.
②
为坐标原点,复数
,
在复平面内对应的点分别为
,
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b8152e623bdf18c13eb171ef57467e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f061010aa858c2b604ecfaad0bf85049.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)从①②中任选一个作答.若选择多个分别作答.按第一个解答计分.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e375a9f478375e2debf7048ac871415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107f2978491bf631a6b49f16925f0122.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/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次
2023-05-10更新
|
483次组卷
|
3卷引用:吉林省白山市抚松县第一中学2022-2023学年高三第十一次校内模拟数学试题
名校
解题方法
8 . 在
中,角A,B,C对边分别为a,b,c,
,D为
边上一点,
平分
.
(1)求角A;
(2)求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a638bd5f352871356e27a990fdb9af0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef0027aef1e6e558d4421c32db8a33f.png)
(1)求角A;
(2)求
![](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 . 已知函数
的最小正周期为
是函数
一个零点.
(1)求
;
(2)在
中,角
的对边分别为
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388b24fe3bafa56b6069a519470c1c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44ace742805df61fbb09c72899f59ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69b5b8c4c24eab782174c5cae1b88a5.png)
(2)在
![](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/25ea7d4cbc002871b64be2e31f6ff4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-05-07更新
|
1553次组卷
|
5卷引用:吉林省长春市东北师范大学附属中学2023-2024学年高三上学期第二次模拟考试数学试题
吉林省长春市东北师范大学附属中学2023-2024学年高三上学期第二次模拟考试数学试题辽宁省大连市2023届高三下学期适应性测试数学试题山西省山西大学附属中学与东北师大附中2024届高三上学期期中联考数学试题(已下线)模块一 专题4 三角函数与解三角形(人教A)3(已下线)河南省信阳市2023-2024学年高三上学期第二次教学质量检测数学试题变式题17-22
名校
解题方法
10 . △ABC的内角A,B,C的对边分别为a,b,c,已知
.
(1)求A;
(2)若
,△ABC的面积为
,求△ABC的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dbd91946f63cd3b2bf86bd53189fc9a.png)
(1)求A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1225fd03e8e8730dac8487dae5387635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34e01955f8c8fe2f0041b35d8d602a7.png)
您最近一年使用:0次
2023-05-05更新
|
2338次组卷
|
7卷引用:吉林省白山市2023届高三五模联考数学试题