记得回答过了啊!在三角形ABC中A,B,C的对边为a,b,c,B=π/3,cosA=4/5,b=√3,1.求sinC的值；2.求三角形ABC的面积.1.sinC=sin(A+B)=sinAcosB+cosAsinB=3/5cos(π/3)+4/5sin(π/3)=3/5×1/2+4/5×√3/2=3/10+4√3/10=(3+4...