已知锐角
的三个内角
的对边分别为
,__________.
在条件:①
;
②
;
③
;
这三个条件中任选一个,补充到上面的问题中并作答.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/7ec5f7e1-ca13-473d-a86f-5a012b97a85c.png?resizew=159)
(1)求角
;
(2)若
,如图,延长
到
,使得
,求
的面积
的取值范围.
![](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)
在条件:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf0e33b442af8dd7b329f2a10e46196.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc12ff25ab1ae723867bb0e25ad7dd1.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74d04c735f96d9b184ecd0626db47fc.png)
这三个条件中任选一个,补充到上面的问题中并作答.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/7ec5f7e1-ca13-473d-a86f-5a012b97a85c.png?resizew=159)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
23-24高三上·辽宁葫芦岛·期末 查看更多[2]
更新时间:2024-01-18 14:06:43
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d7dd733fe8e8d7bdbe1b8190cfdf47.png)
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【推荐1】在△ABC中,角A,B,C的对边分别是a,b,c,且
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