在①
;②
;这二个条件中任选一个,补充在下面的横线上,并加以解答.在△ABC中,角A,B,C的对边分别是a,b,c,S为△ABC的面积,若_____.(填条件序号)
(1)求角C的大小;
(2)点D在CA的延长线上,且A为CD的中点,线段BD的长度为2,求△ABC的面积S的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9dd37bc166b2618a0df82bff3575c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1e02c868bd461937543fb3924cd2ae.png)
(1)求角C的大小;
(2)点D在CA的延长线上,且A为CD的中点,线段BD的长度为2,求△ABC的面积S的最大值.
更新时间:2022-02-25 09:00:36
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