A:ride
B:write
C:drink
There are no buses, you'll have to walk.
在△ABC中,内角A,B,C对边的边长分别是a,b,c,已知c=2,C= π3 .
(Ⅰ)若△ABC的面积等于 3 ,求a,b;
(Ⅱ)若sinC+sin(B﹣A)=2sin2A,求△ABC的面积.