1 . 在
中,
,
,
的对边分别是
,
,
,且
,
,
,
,则
边上的高线的长为( )
![](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/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc97c111826fb6d39bf72ed9ad5585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a74c3e9a8f3f11e98b4fa659a97679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-19更新
|
497次组卷
|
5卷引用:贵州省部分学校2019-2020学年高三联合考试数学理科试题
贵州省部分学校2019-2020学年高三联合考试数学理科试题2020届湖南省邵阳市高三下学期5月二模文科数学试题广西桂林、崇左、贺州2019-2020学年高三5月联合模拟考试数学(文)试题2020届湖南省邵阳市高三二模理科数学试题(已下线)专题16 解三角形-2020年高考数学(理)母题题源解密(全国Ⅰ专版)
2 . 定义在R上的偶函数f(x)满足f(x+2)=f(x),当x∈[﹣3,﹣2]时,f(x)=﹣x﹣2,则( )
A.![]() | B.f(sin3)<f(cos3) |
C.![]() | D.f(2020)>f(2019) |
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解题方法
3 . 在△ABC中,角A,B,C的对边分别为a,b,c,且b(a2+c2﹣b2)=a2ccosC+ac2cosA.
(1)求角B的大小;
(2)若△ABC外接圆的半径为
,求△ABC面积的最大值.
(1)求角B的大小;
(2)若△ABC外接圆的半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089538b72cb1cb5f57fade9ddd5b278c.png)
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名校
解题方法
4 . 在
中,角
的对边分别为
,且
,若
外接圆的半径为
,则
面积的最大值是______ .
![](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/c5338d6be14c7c3f28ce30be8e1c1db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-04-30更新
|
599次组卷
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4卷引用:2020届贵州省遵义市绥阳县高三一模(理科)数学试题
解题方法
5 .
的内角
的对边分别为
.若
,
,则
的面积为________ .
![](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/c4986184b6be8aa8eee88b78e7120064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2219aada65673740650e2bfd9bb144bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-04-23更新
|
1465次组卷
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4卷引用:贵州省2019-2020学年高三(4月份)高考模拟(文科)数学试题
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6 . 将函数
的图像向右平移
个单位长度后,所得函数为偶函数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a72d3b70bbdbdeb9a19a051e8bf28fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8815214fd33f41a3cb7698b01f4a4946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
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2020-01-17更新
|
624次组卷
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4卷引用:【全国百强校】贵州省遵义航天高级中学2019届高三第四次模拟考试数学(文)试题
【全国百强校】贵州省遵义航天高级中学2019届高三第四次模拟考试数学(文)试题2017届江苏南京市盐城高三一模考试数学试卷(已下线)专题04 三角函数的图像与性质-《巅峰冲刺2020年高考之二轮专项提升》(江苏)江苏省南通市第一中学2019-2020学年高一上学期第二次月考数学试题
名校
7 . 在
中,角
所对的边分别为
,且
.
(1)求角
;
(2)若
的中线
的长为
,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/1ee11ee1d1cdcdb1de503a19bc711c34.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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名校
8 . 已知
的图象过点
,且当
时,函数
取得最大值1.
(1)求
的最小正周期和对称轴方程;
(2)当
时,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36e0721d409eb54de75f00462a667b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d26f643f896eda71a2485bd8e41de95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db7b603aebdee8e298d1fe49c848e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778662c16848db470c6537705b8a839c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f6a35bb45a7873c03435ace4c7ac223.png)
(1)求函数
图象的对称轴方程与函数
的单调递增区间;
(2)已知△ABC的内角A,B,C所对的边分别为
若
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f6a35bb45a7873c03435ace4c7ac223.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知△ABC的内角A,B,C所对的边分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae4ba2170bf0d2e358aedcc76961b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451be539a00c5a0fa9e00fc9bf4c39fd.png)
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10 . 等差数列
的前
项和
某三角形三边分别为
,则该三角形最大角为( )
![](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/b43ddbcc926fd2c6a94f2c46161faedd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed529240a883f68f0921e818addeb9c8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-12-04更新
|
581次组卷
|
3卷引用:2019年贵州省铜仁市铜仁第一中学三模数学(文)试题