解题方法
1 . 在
中,
.
(1)求
的值;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee369bffb79298a89d97f56b879efb0a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f62a111f16138478ef8b779644a42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2 . 已知函数
,
(1)求函数
的最小正周期及最值;
(2)求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3491fe6d666a09420fc23bd739d66f34.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
3 . 化简求值
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a18460fdfef3b69145e7d5560e2663.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c455fc5f42ec87fd32a8c84168c10e6.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09599006738185193061aeebbf1cb821.png)
您最近一年使用:0次
解题方法
4 .
中,
分别是角
的对边,若
,则
(1)求证:
;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af99c9bb5f0082e9e07a38cf885a9284.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e424136dc03d906c942920b1998ac18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次
名校
解题方法
5 . 已知
中,角
的对边分别为
,
,
.
(1)求
的值;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09eebab59213386449a726b75065bf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f026c9c28d0e566fcc532c3c3d795021.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a36a3109ebcb0045c1bba6d4da81a2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fadd2e6f0aa16c2c466c904474ffc79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-11-20更新
|
1399次组卷
|
5卷引用:四川省南充高级中学2022-2023学年高三上学期第四次月考数学试题(理)
名校
解题方法
6 . 在锐角
中,角
,
,
所对的边为
,
,
,且
.
(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/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/df4cc62df6ed8a3ec3278d2c2a0ff311.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5a9a60bd5c71dc9b00f98c174827a7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
您最近一年使用:0次
2022-11-04更新
|
1714次组卷
|
5卷引用:四川省绵阳八一中学2022-2023学年高三上学期第三次模拟考试数学理科试题
四川省绵阳八一中学2022-2023学年高三上学期第三次模拟考试数学理科试题四川省绵阳市2023届高三上学期第一次诊断性考试理科数学试题福建省福鼎市第六中学2022-2023学年高三上学期12月月考试数学试题河南省信阳高级中学2023届高三下学期开学考试文科数学试题(已下线)专题12 正余弦定理妙解三角形问题和最值问题 (11大核心考点)(讲义)
名校
解题方法
7 .
的内角A,B,C的对边分别为a,b,c,
,且
.
(1)求B;
(2)
.求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a253fa8ef8919baf5381dc62fc13154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e0e2166dca314e40d53bd483796804.png)
(1)求B;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4866288a5090f07d0508b3e5929f7b7e.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
中,三个内角
,
,
的对边分别为
,
,
,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b78e68c84e8c305a55b792afaaf13b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/a16c655a-ffc4-4321-a9e9-2971a147bd05.png?resizew=201)
(1)求
;
(2)如图,点
在
延长线上,且
,
,
,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/6b78e68c84e8c305a55b792afaaf13b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/a16c655a-ffc4-4321-a9e9-2971a147bd05.png?resizew=201)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
(2)如图,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a1bf64ba772922fe58b5322eb4bced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-02-19更新
|
1096次组卷
|
2卷引用:云南省玉溪市2022-2023学年高二上学期期末教学质量检测数学试题
9 . (1)设
,
.求证:
.
(2)已知
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad91e04a5faf7bc002d8bd42cd4a734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e71e060762829453dd65fd04d68e67c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbf30e439b055d49fbd14a552ad974c.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05692a47c5a4e77c6854b711b52cff09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e79790bc59b265e85dcf1575f15401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129c549fd18b55bac820a613e9846d28.png)
您最近一年使用:0次
名校
解题方法
10 . 已知
的内角
所对的边分别为
,且
.
(1)求角
;
(2)若
,求
的面积的最大值.
![](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/d41f3dbe2d2ca89392dd02ef926eedd6.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-02-05更新
|
364次组卷
|
3卷引用:河北省唐山市开滦第二中学2022-2023学年高三上学期期中数学试题