名校
1 . 在
中,
,
,
,则角
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f2f1eb2beb23690f56a68dc7da08cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
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昨日更新
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7卷引用:陕西省西安市第一中学2024届高三第十六次模拟考试数学(文科)试题
陕西省西安市第一中学2024届高三第十六次模拟考试数学(文科)试题河北省唐山市第二中学2019-2020学年高一下学期月考I数学试题(已下线)6.4.1 正余弦定理(学案)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)福建省莆田第五中学2023-2024学年高一下学期期中考试数学试卷湖北省黄冈市浠水县第一中学2023-2024学年高一下学期期末质量检测数学试题(已下线)高一下期末考前押题卷01-期末考点大串讲(人教B版2019)(已下线)【高一模块一】难度3 小题强化限时晋级练(基础3)
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2 .
是
内一点,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2239bd932c3e449b8179fbfa9a426478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932979fbd93c8f58f804a448d4a4983c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 在
中,若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
________ .
![](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/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32220fd969663f42cd619f8cc8b355c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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4 . 设
的内角
,
,
的对边分别为
,
,
,已知
,则
的外接圆的面积为( )
![](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/b2c71e92f28fc72862943a1c61091056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在
中,内角
的对边分别为
,
,且
,则
面积的最大值为______ .
![](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/03eb5e5d3e73e6b3ea4567b6974cfffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-05-13更新
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1481次组卷
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4卷引用:山东省烟台市2024年高考适应性练习(二模)数学试题
名校
6 . 在
中,角
所对的边分别为
,已知
.
(1)若
,求角
的大小;
(2)若
,求
边上的高.
![](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/4849807ab80cfd4c70b8c2a8291a27bb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251c0cef7d83d4cc38157f44f1c1588c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23725094c363fd158166a8698971694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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2024-05-08更新
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1216次组卷
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6卷引用:四川省遂宁市射洪中学校2024届高三高考考前热身数学(文)试题
四川省遂宁市射洪中学校2024届高三高考考前热身数学(文)试题四川省射洪中学校2024届高三高考考前热身理科数学试题北京市顺义区杨镇第一中学2021-2022学年高一下学期期中考试数学试卷江苏省无锡市辅仁高级中学2023-2024学年高一下学期5月月考数学试卷(已下线)高一期末模拟数学试卷01 -期末考点大串讲(苏教版(2019))(已下线)专题05 解三角形大题常考题型归类-期期末考点大串讲(人教B版2019必修第四册)
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解题方法
7 . 记
的内角A,B,C所对的边分别为a,b,c,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
.
(1)求
的值;
(2)若
外接圆的半径为
,且
为锐角,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54544eaad28e26ca95fd163222eaed3a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-05-08更新
|
886次组卷
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3卷引用:江西省宜春市第一中学2024届高三下学期高考模拟(二)数学试题
江西省宜春市第一中学2024届高三下学期高考模拟(二)数学试题(已下线)专题06 解三角形综合大题归类(2) -期末考点大串讲(苏教版(2019))江西师范大学附属中学2023-2024学年高一下学期5月数学素养测试卷
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8 . 若P为等边
内一点,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe2413bdb626db18561460298815a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255e0c5c0f2079dffdc7753952d11cad.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-05更新
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449次组卷
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2卷引用:2024年新高考Ⅰ卷浙大优学靶向精准模拟数学试题(一)
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9 . 在
中,
,则最大角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b254e5ee33a298ef218adbde0d4385b9.png)
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解题方法
10 . 已知
的内角
的对边分别为
,且
.
(1)求
;
(2)若
,
,求
的面积.
![](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/a80835fa2ab9089ff89dedda251645c5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d803e27871810c6b8a7d6169144dd61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-04-23更新
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616次组卷
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2卷引用:内蒙古自治区呼伦贝尔市2024届高三下学期二模理科数学试题