2024高三·全国·专题练习
解题方法
1 . 记
的内角
的对边分别为
,已知
,
的角平分线AD交BC于D,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
______ .(写出符合要求的一组正整数答案即可)
![](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/819c7a62f0c3f64f53370d19db912c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b6bef27de230acad352f25e954f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
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解题方法
2 . 如图,四边形
中,
,
,
,
,则
面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c1e2e3171120aa9a932cfeb59c6d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/e5f4d6bd-e1c8-464c-9ae1-6285efbc02c3.png?resizew=183)
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2024-01-05更新
|
974次组卷
|
5卷引用:河南省2024届高三TOP20名校仿真模拟一数学试题
河南省2024届高三TOP20名校仿真模拟一数学试题(已下线)专题13 解三角形的最值问题(已下线)考点19 解三角形中的几何问题 --2024届高考数学考点总动员【讲】(已下线)压轴小题2 正余弦定理在平面图形中的应用福建省泉州市实验中学2023-2024学年高二上学期1月考试数学试题
2024·全国·模拟预测
解题方法
3 . 设
的内角
所对的边分别为
,且
.若
,且
的内切圆半径
,则
的面积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923faea6bec78697140f57c477ec712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7724bac30a8f807a1449371f047e28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
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2024·全国·模拟预测
解题方法
4 . 如图,在五边形ABCDE中,为边长为4的等边三角形,
,且
.若锐角
的面积为
,则
的最大值为
您最近一年使用:0次
2023高三上·全国·专题练习
解题方法
5 . 在
中,
,
,
,求
的内切圆半径![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efeb0531933d89f1fa2262355ae55a4.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf802a8afd98d021a377c76b1085daed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7407d82d6e55b969d34e937ce36f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efeb0531933d89f1fa2262355ae55a4.png)
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2023高三上·全国·专题练习
解题方法
6 . 已知
的外接圆半径为
,且满足
,则
面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac05165a5c8dfa312213f9c274810816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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7 . 已知锐角三角形
中,角A,B,C所对的边分别为a,b,c,
的面积为S,且
.若
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ae6908f9f7e57c2ff2814c6a917c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c3aa71e1b09565b926c08f07004f6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2023高三上·全国·专题练习
解题方法
8 . △ABC的内角
的对边分别为
,且满足:
.
面积为
,外接圆直径为4,则
的周长为_____ .
![](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/04d68aa5c54b903306c476dacbb04dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3dcbb853e4b9fd1d011bd5f1948018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023高三上·全国·专题练习
解题方法
9 . 在△ABC中,角A,B,C所对的边分别为a,b,c,
,
,
,则△ABC的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154c0fe2aaaa1f7c3bdde6db950e6583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e787dd4c34300c3a3642068b05c26d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f5744572e6103f4438758cf0be2a1a.png)
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2023高三上·全国·专题练习
10 . 如图,在平面四边形
中,
.记
的面积为
,
的面积为
.
,则S的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e740f4cf27405dbf28ae40ac1bf3eb21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28df6038cf903a5b6b069ff0aec4ec0.png)
![](https://img.xkw.com/dksih/QBM/2023/12/19/3392566498025472/3392592825778176/STEM/4d3e01fd2b6042c58098dfd1312316fd.png?resizew=125)
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