名校
解题方法
1 . 已知函数
,角A为△ABC的内角,且
.
(2)如图,若角A为锐角,
,且△ABC的面积S为
,点E、F为边AB上的三等分点,点D为边AC的中点,连接DF和EC交于点M,求线段AM的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2a82f4820d3ffdd52f152c69a70872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbacffbd6184d83356dc34290522529.png)
(2)如图,若角A为锐角,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7cb903441d8e6b4448c3d5d7959d9d7.png)
您最近一年使用:0次
名校
解题方法
2 . 已知在
中,角
的对边分别为
,且
.
(1)求
;
(2)若
为锐角三角形,且
,求
面积的取值范围.
![](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/4e76d1daae086f2dfb91868c898fc2c6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-06-08更新
|
1115次组卷
|
2卷引用:安徽省六安第一中学2023-2024学年高三下学期期末质量检测卷(二)数学试题
解题方法
3 . 在锐角
中,内角A,B,C的对边分别为a,b,c,已知:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899965855c91e639fb333dc936da2af.png)
(1)求b和角B;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6426c8c9ef90d8009595b0fcc0b5ffe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899965855c91e639fb333dc936da2af.png)
(1)求b和角B;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed951363174bfc4032b2c0f4b94dd59.png)
您最近一年使用:0次
解题方法
4 . 下面结论正确的有( )
A.若![]() ![]() ![]() |
B.![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
5 . 设向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a221e20e74e70f63c8359e7a55206e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ac02c7ecd1af99923002f241a3e3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf65455b3a39cf6cd951692a1cf9215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423dc529c0baf59600aea1e07acb300f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 给出以下三个件:①
,②
,③
.请从这三个条件中任选一个将下面的题目补充完整,并求解.已知在锐角
中,内角
的对边分别为
且______.
(1)求边长
;
(2)若
的面积
,求角
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bec3032327fbc64700c63463dbcd87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8770fea557df4d2e7dae279e1ea7ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4edcaf3e729175abc25381bbac394c13.png)
![](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/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
(1)求边长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07abc09e1f0bf5eb87259e3381b3316a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
7 . 在
中,内角
所对的边分别是
,
,
,已知
.
(1)若
,且
为锐角三角形,求
的周长的取值范围;
(2)若
,且外接圆半径为2,圆心为
,
为圆
上的一动点,试求
的取值范围.
![](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/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/20be9adeb5574fdd3d975f053062887c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988b7e964e313579ab8869d67d5be007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
您最近一年使用:0次
8 . 已知函数
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47fcc72efd76b4e77067837ebd5c4b4a.png)
A.![]() ![]() |
B.![]() ![]() |
C.将![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知
分别为
内角
的对边,
.
(1)求角A;
(2)若
的面积为
,周长为6,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d62c70a4a95044816d44c9dffde42e.png)
![](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/021e041059e91a4533d140c64cc1c4bc.png)
(1)求角A;
(2)若
![](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/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024-05-14更新
|
1218次组卷
|
3卷引用:安徽省蚌埠市2024届高三第四次教学质量检查考试数学试题
安徽省蚌埠市2024届高三第四次教学质量检查考试数学试题江苏省扬州市第一中学2023-2024学年高一下学期5月教学质量调研评估数学试题(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)
名校
解题方法
10 . 已知
,其中
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d45c243d18b3c631dc5d7c950b7abe.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83be7ef23528662dc5c51712075afbc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5452e63d177ca8554374770d25898a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376b80839b848fef532a8715c4cedd5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d45c243d18b3c631dc5d7c950b7abe.png)
您最近一年使用:0次