1 . 在
中,
,
,若
为其重心,试用
,
表示
为________ ;若
为其外心,满足
,且
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79f2cfa5e197f859d8cac3d2287ece9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39282450bc4833027a7bdfa81c39f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc82b2473d4295b1f6351c46b7f1fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a6510ac6350e9df2a3540fd459e31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1e9198ee4a149e2d3858b2c92990ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 在
中,
,
,
,则
的长度为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8dec514927ab13511f5534553a894b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a765dd2c267ebacc0596d0a0fb0aded1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2202d9071a4a53bb61b1237269e537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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2022-07-13更新
|
528次组卷
|
4卷引用:2024年天津市河北区普通高中学业水平合格性考试模拟检测数学试题
3 . 在
中,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a00d6c5d80f95848a61f305e6bc394.png)
________ .若点P满足
,其中
,
满足
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bd0d49457c41285dd8ec2ebd8fb41d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed8128329f973dff60d13e4039957b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5784ea22dbd90af6cdceae43f80a22e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a00d6c5d80f95848a61f305e6bc394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf1a719b146cd95fdbcd35961c34212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83b832e8ae6c85d5382a6200d60ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f645d4b09fba53f971172cd2602c691.png)
您最近一年使用:0次
2022-04-19更新
|
584次组卷
|
2卷引用:天津市第二中学2022届高三下学期5月线上测试数学试题
解题方法
4 . 在
中,
,
,
分别为内角
,
,
的对边,且满
.则
(1)
=________ ;
(2)若
,
,则
的面积为________ .
![](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/e0705bf91aea8db5128073a1f252f12c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d62e60396295cd74d03e38978405bc.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
5 . 如图,在已知的四边形
中,
,
,
,
,
,点
为
边上的动点,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af32ecdc0dc2f1a60b47f3311a0587d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f8fe909fd18216cc2fe13fd260162f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319536a5b0d3f94d4b1a495c3b19d79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15554b45e9c66c5fc508d701f00e0f0.png)
![](https://img.xkw.com/dksih/QBM/2020/12/1/2605026484871168/2606910819753984/STEM/2e30acda79d3404a998ad98a0e4eaf5b.png?resizew=175)
您最近一年使用:0次
2020-12-04更新
|
1498次组卷
|
8卷引用:天津市南开中学2022届高三下学期二模数学试题
(已下线)天津市南开中学2022届高三下学期二模数学试题天津市耀华中学2022届高三下学期统练12数学试题天津市第一中学2020-2021学年高三上学期第二次月考数学试题(已下线)专题17 解三角形(客观题)-2021年高考数学(文)二轮复习热点题型精选精练(已下线)专题18 解三角形(客观题)-2021年高考数学(理)二轮复习热点题型精选精练(已下线)专题17 解三角形(客观题)-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)(已下线)专题9.1正弦定理与余弦定理(B卷提升篇)-2020-2021学年高一数学必修第四册同步单元AB卷(新教材人教B版)江西省宜春市奉新县第一中学2020-2021学年高一下学期第二次月考数学试题
名校
解题方法
6 . 在
中,已知
,
,
,P为线段
上的点,且
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4412a34091f001919005100be0679e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386eb659fda09b15da83566e79f20e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef98fdbaa33fc752c802e833f8b08a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b0583960cbb6a51db9e15d2a463503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b151553b3fae77794b12964d4a714.png)
您最近一年使用:0次
2020-07-08更新
|
748次组卷
|
5卷引用:天津市滨海新区七校(塘沽一中等)2021届高三一模数学试题
名校
解题方法
7 . 在
中,内角
,
,
所对的边分别为
,
,
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
______________ .
![](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/17e4758ddc08963fc2bef9f218fabac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
您最近一年使用:0次
2020-06-05更新
|
382次组卷
|
2卷引用:天津市部分区2020届高考二模数学试题
名校
解题方法
8 . 若
的面积为
,且
为钝角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
_________ ;
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b46b9e5e91df1586154167aa82938a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
您最近一年使用:0次
解题方法
9 . 在△ABC中,角A,B,C的对边分别是a,b,c,若B=2C,2b=3c.则cosC的值为_________ .
您最近一年使用:0次
名校
解题方法
10 . 已知△ABC的三个内角A,B,C的对应边分别为a,b,c,且
.则使得sin2B+sin2C=msinBsinC成立的实数m的最大值是 ______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debde5cc5728cd4f27f3a94121d34e4e.png)
您最近一年使用:0次
2017-12-01更新
|
1223次组卷
|
3卷引用:【校级联考】天津市六校联考(静海一中、杨村一中、宝坻一中等)2018届高三(上)期末模拟考试数学(理)试题
【校级联考】天津市六校联考(静海一中、杨村一中、宝坻一中等)2018届高三(上)期末模拟考试数学(理)试题广西桂林中山中学2017-2018学年高二上学期段考数学(理)试卷(已下线)压轴小题2 正余弦定理在平面图形中的应用