解题方法
1 . 已知
的内角
的对边分别是
,
.
(1)求
;
(2)若
,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/81ab4eb22f35086ce9fd5bfcb8c1cc9b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfd670b36d3987d275102b7fc8d04d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-06-02更新
|
557次组卷
|
3卷引用:贵州省威宁彝族回族苗族自治县第八中学2023届高三数学(文)冲刺卷(二)试题
2 . 直角坐标系xOy中,点
,动圆C:
.
(1)求动圆圆心C的轨迹;
(2)以坐标原点为极点,x轴正半轴为极轴建立极坐标系,曲线M的极坐标方程为:
,过点P的直线l与曲线M交于A,B两点,且
,求直线l的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943cba835f7a0aa28637ca645c46d485.png)
(1)求动圆圆心C的轨迹;
(2)以坐标原点为极点,x轴正半轴为极轴建立极坐标系,曲线M的极坐标方程为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3399076f2a4010f492828acf481d17a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571ccb103dd1c5b04dc70f7b36ed91fe.png)
您最近一年使用:0次
2023-05-09更新
|
756次组卷
|
5卷引用:贵州省毕节市2023届高三诊断性考试(三)数学(文)试题
名校
解题方法
3 . 已知a,b,c分别是
三个内角A,B,C的对边,且
.
(1)求B;
(2)若
,且
的面积为
,求a,c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d64f8eb3a8c24082d0040302a12a4a6.png)
(1)求B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39372e70f5465f8cf0c5ebf7653f0e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
您最近一年使用:0次
2023-05-09更新
|
487次组卷
|
3卷引用:贵州省毕节市2023届高三诊断性考试(三)数学(文)试题
解题方法
4 . 在
中,角
所对的边分别为
.
(1)求
的大小;
(2)若
为
的中点,
,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/1615ee04c6ac38578660eca204abaf4d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86771507321f4c58a5df1f17d5c371e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2023-05-09更新
|
698次组卷
|
3卷引用:贵州省部分高中2023届高三模拟考试数学(文)试题
名校
解题方法
5 . 已知a,b,c分别为△ABC三个内角A,B,C的对边,
,且
.
(1)求A;
(2)若
,求证:△ABC是直角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378d6132d464cd709363b092b1931d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37ee47dec729c00720d177e2171ed83.png)
(1)求A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8877b8028b64772712db6af58cfa1ccd.png)
您最近一年使用:0次
2023-05-06更新
|
843次组卷
|
5卷引用:贵州省贵阳市2023届高三适应性考试(二)数学(理)试题
解题方法
6 . 已知△ABC中,角A,B,C所对的边分别为a,b,c,其中
,
,
.
(1)求C的值;
(2)过点C作CD垂直于直线AB,垂足为D,求CD的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f2413a36eac676c03aac729935ba490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb75557d217f59ef1f33e8da1ac0d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8b67a80b2014c240f05c7693f5067d.png)
(1)求C的值;
(2)过点C作CD垂直于直线AB,垂足为D,求CD的值.
您最近一年使用:0次
名校
解题方法
7 . 记
内角A,B,C的对边分别为a,b,c,且
.
(1)求C;
(2)若
为锐角三角形,
,求
周长范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d040b1de338ce62b9c062e50375fc52c.png)
(1)求C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-04-23更新
|
2430次组卷
|
5卷引用:贵州省贵阳市五校2023届高三联合考试(五)理科数学试题
贵州省贵阳市五校2023届高三联合考试(五)理科数学试题贵州省贵阳市五校2023届高三联合考试(五)数学(文)试题(已下线)重难点突破03 三角形中的范围与最值问题(十七大题型)-1山东省菏泽市鄄城县第一中学2023-2024学年高一下学期4月月考数学试题辽宁省鞍山市第一中学2022-2023学年高一下学期期中考试数学试卷
名校
解题方法
8 . 某市拟在长为
的道路
的一侧修建一条供市民游玩的绿道,绿道的前一部分为曲线
,该曲线段为函数
的图像,且图像的最高点为
,绿道的后一段为折线段
,且
(如图所示).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/2310554e-eb08-4b54-9e20-1fb9d86dd1d4.png?resizew=191)
(1)求实数
和
的值以及
,
两点之间的距离;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e7a7eb74c302ac80956af681616de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606933719a24e9a5e214600b772a093f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d322346e7e78821b599b10b35e4566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ff9f79842ed7145b9a1b9a984c65e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52173c8cc44246823c2bee21a783b731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f22d73b3c2fc7414fe4e33b64b7317c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/2310554e-eb08-4b54-9e20-1fb9d86dd1d4.png?resizew=191)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23b488f961d9fde37feb7f5c497c0d9.png)
您最近一年使用:0次
2023-03-20更新
|
375次组卷
|
3卷引用:贵州省铜仁市2023届高三适应性考试(二)数学(文)试题
名校
9 . 已知
.
(1)求
的取值范围;
(2)若
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c713535cdad706e60b91f752d99e2f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e188ac2faddbfc1af5ccc789c7cae3.png)
您最近一年使用:0次
2023-02-19更新
|
468次组卷
|
5卷引用:贵阳省铜仁市2023届高三下学期适应性考试(一)数学(理)试题
名校
10 . 在直角坐标系
中,曲线
的参数方程为:
(
为参数),以坐标原点
为极点,
轴的非负半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求曲线
的极坐标方程和曲线
的直角坐标方程;
(2)在极坐标系中,射线
与曲线
交于点
,射线
与曲线
交于点
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9882d1bb575aa6abbfa57722d7eee611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6cf7478b2caa6926bf8a055e050f6b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)在极坐标系中,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65125a43aa50b652de8f5614b81f176a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff888d9abc60d2b1e773729bc2c22f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2023-02-15更新
|
1663次组卷
|
9卷引用:贵州省毕节市2023届高三年级诊断性考试(一)数学(文)试题