2024·全国·模拟预测
解题方法
1 . 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
2 . 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
解题方法
3 . 在
中内角A,B,C所对的边分别为a,b、c,
,
,则
面积的最大值为______ .
![](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/51e2796486790bded8cb64453e252f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
解题方法
4 . 在
中,角A,B,C所对的边分别为a,b,c,若
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0bfc651177a2f1f3b74e1cc9b33430.png)
______ ;
面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a634f4a62ac7f702bd09b1f9d26397f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819c7a62f0c3f64f53370d19db912c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0bfc651177a2f1f3b74e1cc9b33430.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
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 . 在
中,
,
,
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07abc09e1f0bf5eb87259e3381b3316a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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8 . 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
9 . △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
10 . 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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