解题方法
1 .
的内角
的对边分别为
,
,
,满足
.
(1)求证:
;
(2)求
的最小值.
![](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/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/4a988a30fb553c74d1f3f0f8062eeb45.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefb66baf2c738593be618b5895c4975.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413323ab92f73c1eabb235731bb5c399.png)
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2 . 点S是直线
外一点,点M,N在直线
上(点M,N与点P,Q任一点不重合).若点M在线段
上,记
;若点M在线段
外,记
.记
.记
的内角A,B,C的对边分别为a,b,c.已知
,
,点D是射线
上一点,且
.
(1)若
,求
;
(2)射线
上的点
,
,
,…满足
,
,
(i)当
时,求
的最小值;
(ii)当
时,过点C作
于
,记
,求证:数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710ec0e2f57b863122c39622141adb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22f3ed6e3e1aa96415e8b735bd6f6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aae34c78a65e740d8816ad9b78846ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272867d48283a6f437c142d6b129df1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266312b6f9b6b90356d036ba58194305.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db0efca586470244e8b9348b9f6dce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
(2)射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb44db1dc864ff4901be1e10da79747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2e92fb281ea5cc9e19fb36b0004dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd09fb9482124fd35f19b86894648f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456e29e6f738aa0f4c2c208bc10e4886.png)
(ii)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2400d72b1e3145cb21ba719d8a968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a9f03a8746152eadb99d03a0079c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94840459dfcff33b5c6ff537f1860664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382c9b2bad23beed73047f9dbc38b405.png)
您最近一年使用:0次
2024-04-23更新
|
746次组卷
|
3卷引用:压轴题05数列压轴题15题型汇总-1
名校
解题方法
3 . 在
中,角
的对边分别为
,若
.
(1)求角
;
(2)若
,点
满足
,
(i)求证:
;
(ii)求
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/d508afde1aeec44b8e107298c5c31b91.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b888043c5b4b876f62d9dfd6a47e86.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e782ced8a9d61ad08186aa0f2455aa.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1f7040233c8b7050b799b08d632d51.png)
您最近一年使用:0次
2024-04-11更新
|
320次组卷
|
3卷引用:6.4.3.2?正弦定理15种常考题型归类(2)-高频考点通关与解题策略(人教A版2019必修第二册)
(已下线)6.4.3.2?正弦定理15种常考题型归类(2)-高频考点通关与解题策略(人教A版2019必修第二册)福建省厦门第一中学2023-2024学年高一下学期第一次适应性训练(月考)数学试题福建省厦门第一中学2023-2024学年高一下学期第一次适应性数学试题
2024高三·全国·专题练习
解题方法
4 . 在
中,角
、
、
的对边分别为
、
、
,且
.
(1)求
的最大值;
(2)求证:在线段
上恒存在点
,使得
.
![](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/86377ffad61925cd77ab4ed493e94c85.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca69890d870ac9a79fe891ff57396e37.png)
(2)求证:在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2cd303cd194c700b1a9d048d23662f.png)
您最近一年使用:0次
名校
解题方法
5 . 在锐角
中,内角A,B,C所对的边分别为a,b,c,满足
.
(1)求证:
;
(2)若
,求a边的范围;
(3)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8e5ce6c55a720a332a08c07f1a89a1.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9563e5c29f03707996eb761fba29ce21.png)
您最近一年使用:0次
7日内更新
|
569次组卷
|
4卷引用:【高一模块二】类型2 以解三角形为背景的解答题(B卷提升卷)
(已下线)【高一模块二】类型2 以解三角形为背景的解答题(B卷提升卷)四川省内江市第六中学2023-2024学年高一下学期期中考试数学试卷(已下线)【北京专用】高一下学期期末模拟测试B卷湖北省武汉市第六中学2023-2024学年高一下学期6月月考数学试卷
名校
解题方法
6 . 已知在
中,三个内角A、B、C的对边分别为a、b、c,且
.
(1)若
,
,求b;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b232b4f2ef927cbcff6b5f14f31421.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b9446d7b31f0d6e044cf99deeb20aa.png)
您最近一年使用:0次
解题方法
7 . 记锐角
的内角
,
,
的对边分别为
,
,
,已知
.
(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/59ea9730867a7e5623f023bf5424061d.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759ee5f5ca252f6acce1aacea9d17fa6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ea513ef4c8fc4d8c31eff498740680.png)
您最近一年使用:0次
解题方法
8 . 在
中,内角
所对的边分别为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcac0a22d687b775f8f81653bc2f5bbb.png)
(1)证明:
.
(2)若
外接圆的周长为
,且
,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/fcac0a22d687b775f8f81653bc2f5bbb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988b7e964e313579ab8869d67d5be007.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c650629fc78e7b4cc1e92b14d2b15b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
9 . 在
中,内角
所对的边分别为
,已知
.
(1)求
的值.
(2)若
是
的平分线.
(i)求证:
;
(ii)若
,求
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/f7a5fbd7b74764999d76e069bfe238c4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36edd882c513de863b0e961f44d9f49e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8769f745f683ed83006cd7836c3dee.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6997e793a7537e23bb37bd12b9c357.png)
您最近一年使用:0次