在
中,a,b,c分别为角A、B、C的对边,O为
的外心,且有
,
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ac4ff569f64ca01a3bac8975196a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2990b5af201ca1ff703f0fd41aa039e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8954ac84d5a64358d2876a62f2a439b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585d85fd1c74898b4853bc8f36e44619.png)
A.1 | B.-2 | C.0 | D.![]() |
更新时间:2023-07-16 03:40:01
|
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解题方法
【推荐2】记锐角
内角A,B,C的对边分别为a,b,c,
且
.则
周长范围为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐1】在三角形
中,角
对应的边分别为
,若
,
,
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
【推荐2】已知
的内角A,B,C对的边分别为a,b,c,
,
,当内角C最大时,
的面积等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56c68c46de5d253de2498050eeddfdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】在
中,角
的对边分别是
且
成等差数列,
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的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】关于三角形满足的条件,下列判断正确的是( )
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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【推荐1】如图,在
中,
、
分别是
、
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在
上,且
,
是△
(不含边界)内的动点,满足
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【推荐2】△ABC中,D为AB上一点且满足
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