S△ABC=a*b*sinC/2b*sinC=2S△ABC/a=2*√3/2=√3 ①B-C=π/2B=C+π/2②A=π-B-C=π-(C+π/2)-C=π/2 -2C③由②：sinB=sin(C+π/2)=sinC*cos(π/2)+cosC*sin(π/2)=cosC ④由③：sinA=sin(π/2 -2C)=sin(...