A:Why are you here ?
B:How do you do
C:What's wrong?
D:What's this ?
m=(1,sinA),n=(2,sinB),且m∥n.
(Ⅰ)求 b , c 的值;
(Ⅱ)求角A的大小及△ABC的面积.
夏季,在什么地方容易采到蘑菇?( )