名校
解题方法
1 . 已知
的三个内角A,B,C满足
,当
最大时,动点P使得AP,AB,PB的长依次成等差数列,此时
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640e8db21ad5c25601a94c3cf2652301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129dac135251933324b0a0d0fefb5cbf.png)
您最近一年使用:0次
2023-05-20更新
|
1167次组卷
|
3卷引用:黑龙江省牡丹江市第一高级中学2023届高三热身考试(二)数学试题
名校
解题方法
2 . 已知在
中,角
,
,
的对边分别是
,
,
,面积为
,且_____.
在①
,②
;③
这三个条件中任选一个,补充在上面的问题中,并根据这个条件解决下面的问题.
(1)求
;
(2)若
,点
是
边的中点,求线段
长的取值范围.
![](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/cf231f8f86fb922df4ca0c87f044cec3.png)
在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbbbd5c5b9a0ca638101ddda98ab2b30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64ff86fae680725b91daca71dae0fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea151b20b055db004888c18fdf0edb5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8332410a7d9d85f62f01cf008de38ac.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)
您最近一年使用:0次
2023-05-19更新
|
599次组卷
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2卷引用:黑龙江省大庆市2023届高三下学期第二次教学质量检测数学试题
名校
解题方法
3 . 已知
三个内角
的对边分别为
,
,
,依次成等比数列,
.
(1)求角
,并判断三角形的形状.
(2)
在区间
是单调增函数,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/b74c64f289bf1952655ba880b751c95c.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f08b6b580f425067e6c8519c8355836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
解题方法
4 . 在
中,内角A,B,C所对的边分别为a,b,c,请在①
;②
;③
这三个条件中任选一个,完成下列问题.
(1)求角C的大小;
(2)若b=2,当
取最大值时,求
外接圆半径和内切圆半径的乘积的值;
(3)若
为锐角三角形,
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e2d0856f3906e7520d1114b2c1afb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cf45c43600adaa3e11c02328f0c6c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363ae962bca4d90fa8d3b1de64c900ea.png)
(1)求角C的大小;
(2)若b=2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66abf87b9f09ee84c04dcf4096c4cbfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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
2023-05-08更新
|
363次组卷
|
2卷引用:黑龙江省实验中学2022-2023学年高一下学期期中数学试题
名校
5 . 已知点
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafce249be1aeee0581417db4ce841db.png)
(1)若
,且
,求x的值
(2)设函数
,求
的单调递增区间.
(3)对于(2)中的函数
,
,
,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27149c9ff20937492950f42084caa019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4472fb544c4694e7c8645b295fef95ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafce249be1aeee0581417db4ce841db.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c19e5e4dbd992d293858b78ded3867b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b604c6522119e77c1cb16b91532a2c1.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0bbfac77d5987a641088a5ef88d503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)对于(2)中的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f39990c086661a89d84af30b4f923f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bfdb5f50c0514b2b7cb83b2c29407b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
您最近一年使用:0次
名校
解题方法
6 . 已知
分别为
的内角
的对边,且
.
(1)求角
;
(2)若
的面积为
,求
的周长.
![](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/0a47b60e0976e811cdd6d9e19573e347.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb73a2dc40069c748730f6bac9031e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-05-07更新
|
2826次组卷
|
6卷引用:黑龙江省哈尔滨市第四中学校2022-2023学年高二下学期期中数学试题
名校
7 . 在平面四边形ABCD中,
,
,点B,D在直线AC的两侧,
,
.
(1)求∠BAC;
(2)求
与
的面积之和的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
(1)求∠BAC;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
您最近一年使用:0次
2023-05-06更新
|
1245次组卷
|
4卷引用:黑龙江省牡丹江市第一高级中学2023届高三热身考试(二)数学试题
名校
解题方法
8 . 已知锐角
的内角A,B,C所对的边分别为a,b,c,向量
,
,且
.
(1)求角C的值;
(2)若
,求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ce6282447722fc46eda873b2e22bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a794bdf8fa3fa34bc3d6d165cb07f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb5138a03b19266f82223899a614f7.png)
(1)求角C的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-04-27更新
|
2559次组卷
|
7卷引用:黑龙江省哈尔滨市第九中学校2022-2023学年高一下学期7月月考数学试题
黑龙江省哈尔滨市第九中学校2022-2023学年高一下学期7月月考数学试题浙江省浙南名校联盟2022-2023学年高一下学期期中联考数学试题(已下线)高一数学下学期第二次月考01(范围:平面向量,解三角形,复数,立体几何)(已下线)模块二 专题4 解三角形与三角函数江西省新余市第一中学2022-2023学年高一下学期第二次月考数学试题河北省衡水市第二中学2022-2023学年高一下学期学科素养评估(四调)数学试题河北省保定市部分高中2024届高三上学期期末数学试题
名校
解题方法
9 .
中,
,
,
分别为角
,
,
的对边,且
.
(1)求角A;
(2)若
的内切圆面积为
,求
的面积S的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/eb22c482c2bfca8040431ef56b2a4b66.png)
(1)求角A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.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 . 某公园有一块三角形空地,如图,在
中,
,
,为了增加公园的观赏性,公园管理人员拟在
中间挖出一个池塘
用来放养观赏鱼,
、
在边
上,且
.
,求
的长;
(2)为节省投入资金,池塘
的面积需要尽可能的小,记
,试确定
为何值时,池塘的面积最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d542f02c7b1815933d27ff2fa031ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86c589939053ce21ce0a67cf40054a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5c3a6c24a928f9d7508ca02b334fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d33cf3c179591ca4ed32ced81b1647a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)为节省投入资金,池塘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0cf054e01d671fd082d0e92c4d44704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2023-04-21更新
|
479次组卷
|
4卷引用:黑龙江省哈尔滨市第一中学校2022-2023学年高一下学期期中数学试题