在
中,
是方程
的两个根,且
.求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de83db6ded86f90ee46303616cb33cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2f2e03338be15c16339450eb4e2c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bf5065465ea27a87832d0353a0a3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
更新时间:2019-11-10 14:59:49
|
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】在
中,内角A,B,C的对边分别为a,b,c,
,
.
(1)若
,求a;
(2)若
的面积为
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955ef86f85141851545b457c8093783e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802e162b98c280720fcb909cf392fda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】△ABC的内角A,B,C的对边分别为a,b,c,若
,且△ABC外接圆的半径为1.
(Ⅰ)求角C;
(Ⅱ)求△ABC面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3997669c8d2674fe4303c0e2c2f99c6.png)
(Ⅰ)求角C;
(Ⅱ)求△ABC面积的最大值.
您最近一年使用:0次