名校
解题方法
1 . 已知锐角三角形
中,角
的对边分别为
,且满足
.
(1)求证:
;
(2)若
,求三角形
面积的取值范围.
![](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/f68692f3c3b550f985620cef8212a36a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2023-03-28更新
|
810次组卷
|
2卷引用:四川省内江市第六中学2022-2023学年高三下学期第一次月考理科数学试题
2022·全国·模拟预测
解题方法
2 . 在①
,②
,③
且
这三个条件中任选一个,补充在下面问题中,并解答.
在△ABC中,内角A,B,C的对边分别为a,b,c,______.
(1)求证:△ABC是等腰三角形;
(2)若D为边BC的中点,且
,求△ABC周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981cb688a4e15d31e7a43115aa701f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6ae5122d84253a8f5b87da2e389603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e2e6dd48b13e0c4dcd7f0eaf474f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68c4981b1a17cee55c5088c092af9d5.png)
在△ABC中,内角A,B,C的对边分别为a,b,c,______.
(1)求证:△ABC是等腰三角形;
(2)若D为边BC的中点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
您最近一年使用:0次
解题方法
3 . 记△ABC的内角A,B,C的对边分别为
,
,
,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7835f94169920faf8e04c623f41441ee.png)
.
(1)证明:
;
(2)若
,
,求△ABC的面积.
![](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/7835f94169920faf8e04c623f41441ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6c3e00a78921faf110ffb26d93bb2c.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02746ec8e4220d8b4a174d5e9a711ed2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fafa5beb70c80533bb17b31fb5416f.png)
您最近一年使用:0次
名校
解题方法
4 . 在
中,角A,B,C所对的边分别为a,b,c,
.
(1)证明:
;
(2)证明:
;
(3)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6576d4d349d7180332d3c2abdeeb51.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dcad85c5459c1f6b6425c0c43edcd1.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bcb0cf5182f70cf5f2737b709b4a9c.png)
您最近一年使用:0次
解题方法
5 . 在
中,角
,
,
的对边为
,
,
,已知
.
(1)证明:
;
(2)若
,求
的值.
![](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/6e4941cee431622f2ec46572286416dc.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd1ebb13cea4b26eb0d58fb84536ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ea513ef4c8fc4d8c31eff498740680.png)
您最近一年使用:0次
2023高三·全国·专题练习
解题方法
6 . 在
内,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8275b3a1ee3849757a5afe81bad72f2a.png)
您最近一年使用:0次
解题方法
7 . 已知
中,角
,
,
的对边长分别是
,
,
,
,且
.
(1)证明:
;
(2)若
,求
外接圆的面积
![](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/8d5a611bebe78ba33770aec0fe46786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3af83b4173f604bb5971b1597f9f01a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
分别为
三个内角
的对边,且
.
(1)证明:
;
(2)若
,
,
,求AM的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.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/35314b7942eae29de8b67b578f7c4c8d.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12afa49ce117afc97c5261a0364a9cc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819c7a62f0c3f64f53370d19db912c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52afc11b1da9aa6dfaa71af88edd3eeb.png)
您最近一年使用:0次
2023-04-20更新
|
3275次组卷
|
6卷引用:广东省深圳市2023届高三二模数学试题
广东省深圳市2023届高三二模数学试题四川省南部中学2023届高三下学期高考考前理科数学模拟训练(一)(已下线)专题03 三角函数与解三角形(已下线)押新高考第17题 解三角形河南省周口市太康县2022-2023学年高一下学期期中数学试题广东省惠州市龙门县高级中学2024届高三上学期10月月考数学试题
名校
解题方法
9 . 在
中,角
,
,
的对边分别为
,
,
.若
为锐角三角形,且满足
.
(1)证明:
;
(2)若
,
的面积为
,求
的周长.
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ac8e446826ea6e653cd1ac6d5d6106.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b104867a12d24a353d94858c2fa17c8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f15d84d978481084f6e35a46b4ab460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb92317ebf925d7c25c35e44111392ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
10 . 在
中,角A,B,C所对的边分别为a,b,c,
.
(1)证明:
;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6576d4d349d7180332d3c2abdeeb51.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca69890d870ac9a79fe891ff57396e37.png)
您最近一年使用:0次
2023-03-07更新
|
4154次组卷
|
9卷引用:宁夏银川一中、云南省昆明市第一中学2023届高三联合考试一模数学(理)试题
宁夏银川一中、云南省昆明市第一中学2023届高三联合考试一模数学(理)试题(已下线)宁夏银川一中、云南省昆明市第一中学2023届高三联合考试一模数学(理)试题(已下线)专题4 三角函数与解三角形重难点:解三角形综合检测(提高卷)(已下线)专题07三角函数与解三角形(解答题)陕西省西安市长安区第一中学2022-2023学年高一下学期5月月考数学试题山东省菏泽市2022-2023学年高一下学期期中数学试题福建省漳州市第二中学2022-2023学年高一下学期期中考试数学试题(已下线)重难点08 正、余弦定理解三角形的重要模型和综合应用【八大题型】