名校
1 . 在
中,内角
所对的边分别为
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0071e88b38326a3355b331d8081c509c.png)
(1)求证:
;
(2)若
为锐角三角形,
①求
的取值范围;
②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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0071e88b38326a3355b331d8081c509c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c91bf8203ca6d2bf8f985d331f7ee5.png)
您最近一年使用:0次
解题方法
2 . 如图,在
中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/fdd98dd6-cc10-4d70-a4a2-477b894d4b69.png?resizew=148)
(1)若
,求
的最大值.
(2)若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad819abc817030381444a01b3e5fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79f8f4051b5dbc94620f44d93a862d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d2919e5bd26b5e9be672a3ff7604cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/fdd98dd6-cc10-4d70-a4a2-477b894d4b69.png?resizew=148)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c41a83255a091e4cdf5c1150224842.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03234cdf2a49c059aa98e5384f691af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/555503767f3e0f11dfae5a31c2a85fc0.png)
您最近一年使用:0次
名校
3 . 如图:在
中,点
为边
上靠近B点的三等分点,过
的中点O作动直线
,分别交边
和边
于N,M两点,
,则
的最小值为_________
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/9d041678-7f41-44e7-a205-115b414d5c52.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f983a030292c18b81a131aeb99dc2af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/9d041678-7f41-44e7-a205-115b414d5c52.png?resizew=153)
您最近一年使用:0次
名校
解题方法
4 . 在
中,角
所对的边分别为
,已知
.
(1)求角
的大小;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8850859d92d1c79518c35881441468.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cace0f1956948aeb47756c0cf042aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-04-04更新
|
531次组卷
|
4卷引用:重庆市青木关中学校2023-2024学年高一下学期第一次月考模拟数学试卷
重庆市青木关中学校2023-2024学年高一下学期第一次月考模拟数学试卷福建省厦门市杏南中学2023-2024学年高一下学期3月月考数学试题(已下线)模块五 专题1 全真基础模拟1 (人教B高一期中研习室)(已下线)第九章:解三角形章末重点题型复习--同步精品课堂(人教B版2019必修第四册)
名校
解题方法
5 . 数列
满足
,且
,记
为数列
的前
项和,已知
,且
.
(1)求
的通项公式;
(2)求
的通项公式;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e91ab30563e401587e0e1e078fbce09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8771319696ad62f05f1c8135ec33e67e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1458e2d74ec7c75966ff4a772f2891a6.png)
您最近一年使用:0次
名校
解题方法
6 . 在
中,角
,
,
的对边分别是
,
,
,且
.
(1)求角
的大小;
(2)若
,
为
边上的一点,
,且__________,求
的面积.
(从下面①,②两个条件中任选一个,补充在上面的横线上并作答).
①
是
的平分线;
②
为线段
的中点.
![](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/98d001d96098ac094b1f048a58f49f22.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](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/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(从下面①,②两个条件中任选一个,补充在上面的横线上并作答).
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
名校
解题方法
7 . 如图在
中,
,满足
.
,求
的余弦值;
(2)点
是线段
上一点,且满足
,若
的面积为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be878f5bdce9a3e9939a4ae743c803b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10072660396c4821badfd7311389e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4879a4ce2bc66b7fe3e5ff2b3f3915f4.png)
![](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/bbd084e881d380464cc73aee4697f678.png)
您最近一年使用:0次
2024-04-03更新
|
1249次组卷
|
3卷引用:重庆市礼嘉中学2023-2024学年高一下学期第一次月考数学试题
重庆市礼嘉中学2023-2024学年高一下学期第一次月考数学试题湖北省十一校2024届高三联考考后提升数学模拟训练一(已下线)第九章:解三角形章末重点题型复习--同步精品课堂(人教B版2019必修第四册)
名校
8 . 中国古代四大名楼鹳雀楼,位于山西省运城市永济市蒲州镇,因唐代诗人王之涣的诗作《登鹳雀楼》而流芳后世.如图,某同学为测量鹳雀楼的高度MN,在鹳雀楼的正东方向找到一座建筑物AB,高约为37m,在地面上点C处(B,C,N三点共线)测得建筑物顶部A,鹳雀楼顶部M的仰角分别为
和
,在A处测得楼顶部M的仰角为
,则鹳雀楼的高度约为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c12e76fbd84eeec721386bd3b04cc4.png)
A.64m | B.74m | C.52m | D.91m |
您最近一年使用:0次
2024-04-02更新
|
415次组卷
|
3卷引用:重庆市第十一中学2023-2024学年高一下学期3月月考数学试题
9 . 碧津塔是著名景点·某同学为了测量碧津塔
的高,他在山下A处测得塔尖D的仰角为
,再沿
方向前进24.4米到达山脚点B,测得塔尖点D的仰角为
,塔底点E的仰角为
,那么碧津塔高约为(
,
)( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a7ff6bb8000946da9599d7d903ac9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a929d0d84e3654f03694adc8d1a326e.png)
A.37.54 | B.38.23 | C.39.53 | D.40.52 |
您最近一年使用:0次
2024-04-01更新
|
1148次组卷
|
9卷引用:重庆市南开中学2023-2024学年高一下学期阶段测试数学试题(3月31日)
重庆市南开中学2023-2024学年高一下学期阶段测试数学试题(3月31日)(已下线)模块五 专题六 全真拔高模拟2(已下线)高一 模块3 专题1 第3套 小题入门夯实练(已下线)高一 模块3 专题1 第3套 小题入门夯实练(苏教版)(已下线)6.4.3.3 余弦定理、正弦定理应用举例——课后作业(提升版)(已下线)模块五 专题6 全真拔高模拟2(北师版高一期中)广东省汕头市潮阳黄图盛中学2023-2024学年高一下学期期中考试数学试卷(已下线)高一数学期中模拟卷一(范围:平面向量+复数+立体几何初步)--同步精讲精练宝典(人教A版2019必修第二册)(已下线)第二章平面向量及其应用章末综合检测卷(新题型)-【帮课堂】(北师大版2019必修第二册)
名校
解题方法
10 . 在
中,内角
所对的边分别为
,
(1)若
,解三角形:
(2)若角
且
的外接圆半径为
.
①求
的面积;
②求
边
上的高
.
![](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)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede926d3c151ece6614ee4c85e162f44.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272f39f6839b32102b30ca78f6a4f8a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b05a2766e5b1598bb8abb17414a200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83dbfddc6f98548699ed581e8c8608.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
您最近一年使用:0次
2024-04-01更新
|
758次组卷
|
3卷引用:重庆市松树桥中学校2023-2024学年高一下学期第一次段考数学试题
重庆市松树桥中学校2023-2024学年高一下学期第一次段考数学试题广东省广州市育才中学2023-2024学年高一下学期期中数学试题(已下线)第九章:解三角形章末重点题型复习--同步精品课堂(人教B版2019必修第四册)