名校
解题方法
1 . 已知在
中,角
,
,
的对边分别为
,
,
,且
.
(Ⅰ)求
的值;
(Ⅱ)若
,
,求
的面积.
![](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/8972ae42b21480a0fe42667167d7d072.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2269b631c107dac71805624b046f1a8.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
2020-10-25更新
|
798次组卷
|
10卷引用:四川省阆中中学2020-2021学年高三11月月考数学(理)试题
四川省阆中中学2020-2021学年高三11月月考数学(理)试题河南省2020-2021学年高中毕业班阶段性测试(二)理科数学试题天一大联考2021届高三理科数学阶段性测试试题 (二)安徽省阜阳市太和第一中学2020-2021学年高三上学期二模数学(理)试题四川省泸州市泸县第一中学2020-2021学年高三上学期一诊模拟考试文科数学试题上海市格致中学2022届高三上学期12月月考数学试题广西百色市德保高中、田阳高中2021-2022学年高二12月联考数学试题上海市闵行区七宝中学2021届高三上学期期中数学试题上海市实验学校2021届高三下学期开学考数学试题(已下线)课时19 正弦定理、余弦定理和解斜三角形-2022年高考数学一轮复习小题多维练(上海专用)
名校
解题方法
2 . 在
中,内角
,
,
的对边分别是
,
,
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.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/3900abfdc0d452a1b38ee28e37ec67f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7d91cdbcd4a1f9078bf2533fc0525b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
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2020-09-20更新
|
1099次组卷
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6卷引用:四川省南充高级中学2021-2022学年高一下学期第二次月考数学试题
四川省南充高级中学2021-2022学年高一下学期第二次月考数学试题天津市宁河区芦台第一中学2020-2021学年高一下学期阶段质量检测(一)数学试题天津市滨海新区大港太平村中学2019-2020学年高一下学期期末数学试题(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)(已下线)卷01-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(北京专用)天津市北京师范大学静海附属学校2021-2022学年高一下学期期中数学试题
3 . 在①
,②
,③
的面积为
这三个条件中任选一个,补充在下面的问题中,并加以解答.
已知
的内角
,
,
所对的边分别为
,
,
,且___________.
(1)求角
;
(2)若
为
的中点,且
,
,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a9ce6da07624fcde6e1ee7e83fdfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209f68f37ab2832c2840b9c569d02096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c3889b29e9f45191d98e64e1556ec7.png)
已知
![](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)
(1)求角
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18120a244d3a1f9c1688bf53eb2ad775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2020-09-14更新
|
567次组卷
|
4卷引用:四川省南部中学2023-2024学年高三第四次月考数学 (理科)试题
四川省南部中学2023-2024学年高三第四次月考数学 (理科)试题江苏省百校联考2020-2021学年高三上学期第一次考试数学试题2021届高三高考必杀技之结构开放题专练(已下线)第十一章 解三角形(单元重点综合测试)-单元速记·巧练(苏教版2019必修第二册)
名校
4 . 在
中,角
,
,
所对的边分别为
,
,
,且
,
.
(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/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/302887966380058adee5310b0331d6fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fa736ef43b9e614d1ca623cd9d1a93.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
5 . 在
中,边a,b,c所对的角分别为A,B,C.
的面积S满足
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6537e1c1c71a5ce17a956d80ec200b82.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ec3c6749d7187f3a2fdd015edef963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6537e1c1c71a5ce17a956d80ec200b82.png)
您最近一年使用:0次
2020-05-03更新
|
289次组卷
|
2卷引用:四川省南充高级中学2020-2021学年高一下学期第二次月考数学试题
名校
6 . 设a,b,c分别为
的内角A,B,C的对边,已知
,且
,则角B为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a94561d24c857373c7f5010a21730fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c0490a98008b88a5312bfbdd87d7fa.png)
您最近一年使用:0次
名校
解题方法
7 . 体积为
的三棱锥P-ABC的顶点都在球O的球面上,PA⊥平面ABC,PA=2,∠ABC=120°,则球O的体积的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-08-10更新
|
265次组卷
|
6卷引用:四川省阆中中学2019-2020学年高二下学期第二次月考数学(理)试题
四川省阆中中学2019-2020学年高二下学期第二次月考数学(理)试题四川省阆中中学2019-2020学年高二6月月考数学(理)试题吉林省辽源五中2020-2021学年高二上学期第一次月考数学(理)试题湖北省孝感市五校协作体2018-2019学年高三上学期期中理科数学试题(已下线)测试卷11 空间几何体(B)-2021届高考数学一轮复习(文理通用)单元过关测试卷(已下线)第08章 立体几何 (单元测试)-2021年高考数学(文)一轮复习讲练测
名校
8 . 如图
中,
为
的中点,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/6c6db1a6-ad26-4656-bd36-b451cc5a765f.png?resizew=187)
(1)求边
的长;
(2)点
在边
上,若
是
的角平分线,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/fdd07e305584d86b161b58f55769cf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/6c6db1a6-ad26-4656-bd36-b451cc5a765f.png?resizew=187)
(1)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302efd5266f7868d8c67f7bb09dc2ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e8c3cf4bbfa6e00d38761560ddc6b4.png)
您最近一年使用:0次
2019-06-18更新
|
1991次组卷
|
3卷引用:四川省南充市阆中市阆中中学2019-2020学年高三上学期10月月考数学试题
名校
9 . 在
中,
,
,且
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140e540849151c98a71e423aa443b39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce93bd4ce42212fe904b709233ea61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3d814a5e87bf9969c779c306a27a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140e540849151c98a71e423aa443b39e.png)
A.1 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2019-05-18更新
|
866次组卷
|
8卷引用:【全国百强校】四川省南充市阆中中学2018-2019学年高一5月月考数学试题
10 . 在
中,角
,
,
所对的边分别为
,
,
.满足
.
(1)求角
的大小;
(2)若
,
的面积为
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/bc9386381af4f1f0e5c4d87002613229.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2019-07-04更新
|
1532次组卷
|
16卷引用:四川省南充市阆中中学2018-2019学年高二6月月考数学(文)试题
四川省南充市阆中中学2018-2019学年高二6月月考数学(文)试题四川省南充市阆中中学2018-2019学年高二6月月考数学(理)试题【全国百强校】河南省许昌高级中学2019届高三复习诊断(二)数学(文)试题【全国百强校】河北省武邑中学2019届高三下学期第一次质检数学(文)试题福建省厦门市第六中学2018-2019学年高一下学期3月月考数学试题河北省廊坊市文安县第一中学2023-2024学年高一下学期4月月考数学试题黑龙江省齐齐哈尔市2018届高三第一次模拟考试 数学(文)试题【全国百强校】北京市中央民族大学附属中学2019届高三下学期第一次模拟考试数学(文)试题【市级联考】四川省峨眉山市2019届高三高考适应性考试数学(理)试题【市级联考】四川省峨眉山市2019届高三高考适应性考试数学文科试题2020届四川省成都市金堂中学高三一诊模拟数学文科试题(已下线)强化卷07(3月)-冲刺2020高考数学之必拿分题目强化卷(山东专版)(已下线)强化卷06(3月)-冲刺2020高考数学之必拿分题目强化卷(山东专版)(已下线)专题06 三角函数及解三角形-2020年高三数学(文)3-4月模拟试题汇编广东省广州二中2018-2019学年高二下学期期中数学试题2020年普通高等学校招生全国统一考试 文科数学样卷(六)