名校
1 . 如图所示,
是边长为1的正三角形
的
边上一点,从
向
作垂线
为垂足.延长
与
的延长线交于
,设
与
的面积之和为
,把
表示为
的函数:___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8cf8e8e74ffbca80879e8266145d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95067389619ea53fe76aed500e7ce80d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c036eb374274491f675ec50552d517a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/52002e65-e19b-4318-93cd-cdd556254f22.png?resizew=162)
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2022高一·全国·专题练习
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2 . 已知
是
的外心,
,
,若
,且
,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb9914fb59e51bf918fe296650bdce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af4f9d86a3a8251d6840fd5d53ee270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022-04-12更新
|
639次组卷
|
3卷引用:湖南省衡阳市第一中学2021-2022学年高一上学期期中数学试题
湖南省衡阳市第一中学2021-2022学年高一上学期期中数学试题(已下线)专题07 奔驰定理与四心的相关运算及构造圆解决向量问题-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)辽宁省沈阳市第一二〇中学2021-2022学年高一下学期期中考试数学试题
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3 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb1fb92e60604bffb9a48ea80c21084.png)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e9831d3a9d73bcd1f688018e8a5d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb1fb92e60604bffb9a48ea80c21084.png)
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2022-03-02更新
|
988次组卷
|
4卷引用:湖南省怀化市第五中学2020-2021学年高二下学期期中数学试题
名校
4 . 在
中,
为
上一点,
,
为
上任一点,
,
,(
,
),若
,则当
取最小值时,四边形
的面积与
的面积之比等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e19ca07569f4327f18fecc34a846a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/581f5f87c18fa7a1c5cce7a848447d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b5707309fc608f7177724712503dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7bf3be47407d558b4d2f8bb10d259e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172e8fc1228b95ed78f5c2d65af379e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81248468e1a32919d4670392c4600fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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5 . 在
中,角
,
,
所对的边分别为
,
,
.若
,
,
,则
的面积等于__________ .
![](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/f7f85678de64dcc06b3efcdb6a127170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1225fd03e8e8730dac8487dae5387635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71812e0762c0aaffb51cfef66156567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-10-15更新
|
532次组卷
|
2卷引用:2021年湖南省高中学业水平考试合格性考试仿真模拟数学试题
名校
解题方法
6 . 在
中,
,
,
分别为
,
,
所对的边,
,
.
(1)求
;
(2)若
,求
的面积
.
![](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/8748c3d711ec3fe8cc3bb1aa1f118086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8cf0b64f58675ec723146801b57e94e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab1c19b66cda3fb899f06d9a25e973c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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名校
解题方法
7 . 在
中,a、b、c分别为角A,B,C的对边,已知
,
,且
,则
的值等于___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdd31043c300b09b096b518729cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce44de66240d43ef0ca8805a70ec1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
您最近一年使用:0次
2021-07-15更新
|
718次组卷
|
3卷引用:湖南师范大学附属中学2020-2021学年高一下学期期中数学试题
湖南师范大学附属中学2020-2021学年高一下学期期中数学试题(已下线)期中测试·A卷 -【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)辽宁省铁岭市昌图县第一高级中学2021-2022学年高一下学期6月月考数学试题
名校
解题方法
8 . 已知
,
,
分别为
的三个内角
,
,
的对边,且
,点
在边
上,且
,
,则
的面积最大值为___________ .
![](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/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/b49a745ab99e5bd43d46231a8a891124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad072c96836c6d9a4bcb61993203fd66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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9 . 若复数
(其中
为虚数单位)所对应的向量分别为
和
,则
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73c25490ec76b8c17a5a653cd8770f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993a22c614a6c5bdf974f0a7036764fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95985232e68bbf4e37f147d89efbfed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5927f1967a8f72e8fb887edb5023a921.png)
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10 . 锐角
中,内角
的对边分别为
,若
,则
的面积的取值范围是________
![](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/06ab947600848e99ba084784e6fedbeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-06-08更新
|
2056次组卷
|
9卷引用:湖南省长沙市长郡中学2021届高三下学期考前冲刺卷数学试题
湖南省长沙市长郡中学2021届高三下学期考前冲刺卷数学试题河南省驻马店市新蔡县第一高级中学2020-2021学年高一下学期6月月考数学试题(已下线)2021年高考全国乙卷数学(理)高考真题变式题11-15题陕西省西安中学2022届高三下学期八模理科数学试题江苏省泰州中学2021-2022学年高一下学期第二次月度检测数学试题安徽省合肥市第六中学2021-2022学年高一下学期期末数学试题(已下线)2021年高考全国乙卷数学(理)高考真题变式题11-15题福建省永安市第三中学2022-2023学年高一下学期第一次月考(3月)数学试题(已下线)期末考试仿真模拟试卷04-(苏教版2019必修第二册)