名校
解题方法
1 . 在
中,内角
的对边分别为
,且
.
(1)求
的值;
(2)若
,证明:
为直角三角形.
![](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/51f22c7c558ded081502b409e0b48684.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
7日内更新
|
768次组卷
|
4卷引用:内蒙古名校联盟2024届高三下学期联合质量检测文科数学试题
名校
解题方法
2 . 已知
是
内一点,
.
(1)若
,求
;
(2)若
,求
.
![](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/b46c4096bb1fb4701e71e470eee3c7b9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320ca23b731597cf3e4fbe21a106b813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e186ebc624ebacde9a03b96289f1ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f4fddcbd0cfed5190da6d9d7c7e94e.png)
您最近一年使用:0次
2024-06-16更新
|
461次组卷
|
3卷引用:内蒙古自治区锡林郭勒盟2024届高三下学期5月模拟考试理科数学试题
内蒙古自治区锡林郭勒盟2024届高三下学期5月模拟考试理科数学试题河南省部分重点高中2023-2024学年高三下学期5月联考数学试卷 (新高考)(已下线)辽宁省沈阳市第二中学2024届高三下学期三模数学试题
解题方法
3 . 在
中,角
、
、
的对边分别为
、
、
,若
,则
的最小值为( )
![](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/af51f652d4d71fab359fffc2e1c63e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e602c7fd6bf98178bf2dbfb3c5a822.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 设
的内角
所对的边分别为
,若
,
,
,则
等于( )
![](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/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-06-02更新
|
711次组卷
|
2卷引用:内蒙古赤峰曾军良实验学校(赤峰四中桥北新校)2023~2024学年高一下学期5月月考数学试卷
名校
解题方法
5 .
中,内角A,B,C的对边分别为a,b,c,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
6 . 在
中,内角
的对边分别为
,则下列说法正确的是( )
![](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)
A.若![]() ![]() |
B.![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2024-05-03更新
|
771次组卷
|
6卷引用:内蒙古兴安盟乌兰浩特第一中学2023-2024学年高一下学期期中考试数学试题
解题方法
7 . 在
中,
.
(2)若E为
的中点,F是
边上的点,且满足
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463d4d8d92cc9355ff2b3bda0cdf913b.png)
(2)若E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab18cb74b2fedf136b6b4f6e0090c59d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a879e7f156922bb6119bb17ee8fba42.png)
您最近一年使用:0次
解题方法
8 . 已知
的内角A,B,C所对的边分别为a,b,c,向量
,
,且
.
(1)求角B的大小;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125d07d07f91b2744d1af43aea17c37c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b27f3e9e42cfdd7c126f9af2476fc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225b28fc5fbb6ff0e3e742cb6f3a21ed.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af039cad52ca4e1f1e322277bc81afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b79e4f9c5642bf9b67f354aa2d3781.png)
您最近一年使用:0次
解题方法
9 . 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)
您最近一年使用:0次
2024-04-23更新
|
623次组卷
|
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
解题方法
10 . 在三角形
中,内角
,
,
所对的边分别是
,
,
,其中
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b93b9b9a243c80c29ff8c42dd7d5b2.png)
(1)若
,则
等于多少.
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/18af922d7bcd7a1bfbd89398d86eda5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b93b9b9a243c80c29ff8c42dd7d5b2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2bb8574ca76ec30f97d81fab51da10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcfa3e340b3976832d450dd4ae7e7a7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e563e032dfdef69b0f357060c27bd4.png)
您最近一年使用:0次