钝角ΔABC中,角A,B,C所对的边分别为a,b,c,
.
(1)求角C的大小;
(2)若ΔABC的BC边上中线AD的长为
,求ΔABC的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b09cedadba3263c7f8e575a7b9e752.png)
(1)求角C的大小;
(2)若ΔABC的BC边上中线AD的长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11b53e957bf1f2cfb96b7e397988014.png)
更新时间:2018-10-18 15:08:58
|
相似题推荐
解答题-问答题
|
较易
(0.85)
名校
【推荐1】已知角
,
的终边分别与单位圆
:
相交于点
、
,
,且
.
(1)求
的值;
(2)在
中,角
,
,
所对的边分别为
,
,
,若
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790dd03d7a868b3ceed28f32da9a9dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955c39f1e74b01c0f567ba51871877f2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10aa98b163ade82dcadbe8dd3b73e42e.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377080ec5e9f5cb5a1f9be59f1f8aa0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fb08324d12357dd991578831db2ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69facf1b3e8e88d47948ef6ff47efabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐2】在平面四边形ABCD中,
,
,
,
,△BCD的面积为
.
(1)求
的值;
(2)求边BC的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908497b3549eeb1a53292301b76662a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26c79a46281b66f8c530f360a7e2609.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8baab87aaa703b3fe340e8fad36d4426.png)
(2)求边BC的长.
您最近一年使用:0次