名校
1 . 在
中,角A、B、C对边分别为a、b、c,已知
,
,
,那么b等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024bae8fe1437f7f99ee273b903236f9.png)
您最近一年使用:0次
2020-10-23更新
|
533次组卷
|
3卷引用:北京市平谷区2019-2020学年高一下学期期末质量检测数学试题
北京市平谷区2019-2020学年高一下学期期末质量检测数学试题吉林省白城市第一中学2020-2021学年高一下学期期中数学试题(已下线)6.4.2 正余弦定理(精练)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)
名校
2 . 在
中,角
、
、
所对的边分别为
、
、
,已知
,
,
,则
的面积为________ .
![](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/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5cd6ce30ac70cd343334139c1a478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5d7f13fa1e0d27980150f2bc613e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-10-17更新
|
137次组卷
|
2卷引用:吉林省白城市洮南市第一中学2020-2021学年高三上学期第一次月考数学(理)试题
2020高三·全国·专题练习
解题方法
3 . 设
、
、
分别是
的内角
、
、
的对边,已知
,设
是
边的中点,且
的面积为
,则
等于________ .
![](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/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/e5b9a70f616f35e7053621f43f26f838.png)
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f79d107082dde2da98076c1d58d0eb.png)
您最近一年使用:0次
2020-08-17更新
|
2593次组卷
|
3卷引用:吉林省通榆县第一中学2020-2021学年高三上学期第二次月考数学(文科)试题
吉林省通榆县第一中学2020-2021学年高三上学期第二次月考数学(文科)试题(已下线)考点17 正余弦定理(讲解)-2021年高考数学复习一轮复习笔记河南省2021-2022学年高三上学期阶段性大联考一文科数学试题
解题方法
4 . 在极坐标系中,
为极点,已知
两点的极坐标分别为
,
,则
的面积为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e714b2fdd9a766c68b0d7dd26247448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45631ebbc98a65cac10ba4d21f36f723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2020-05-12更新
|
265次组卷
|
2卷引用:吉林省白城市通榆县第一中学2019-2020学年高二下学期网络期中考试数学(理)试题
名校
解题方法
5 . 在
中,边
所对的角分别为
,
的面积
满足
,若
,则
外接圆的面积为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49b13a48936af70d16d940c926c1b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2020-02-20更新
|
1802次组卷
|
8卷引用:吉林省白城市第四中学2019-2020学年下学期高一网上阶段检测试卷数学试题
6 . 已知
中,
,
,
,则
面积为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3217356a47dcfb08fe44d9afe1a1c1ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124a9c19ebda64bc06a7f9bfbb4e7548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次
2018-09-25更新
|
3217次组卷
|
8卷引用:吉林省白城市第一中学2017-2018学年高一下学期期末考试数学试题
名校
7 . 在△
中,内角
的对边分别为
,若其面积
,角
的平分线
交
于
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
________ .
![](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/99819d0b35909e67c888933e85e28902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4db3d5ecdceba51deccbfd2d4f4a97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
2018-03-11更新
|
613次组卷
|
4卷引用:2020届吉林省白城四中高三网上模拟考数学文科试题