a/sinA=b/sinB=c/sinC(a+b)/(sinA+sinB)=c/sinC(sinA+sinB)=(a+b)sinC/c=(3+√3)/(2√2)sinA+sinB=2sin60cos[(A-B)/2]=(3+√3)/(2√2)cos[(A-B)/2]=(1+√3) /(2√2)=0.9661(A-B)/2=14.9A+B=120A=74.9B=45.1