A=180-30-105=45
AC/sinB=BC/sinA
AC=BCsinB/sinA=3sqrt(2)0,5/(sqrt(2)/2)=3
AB/sin105=AC/sin30
AB=ACSIN105/sin30=3cos15/0,5=6cos15=3(sqrt(3)+1)/sqrt(2)
cos15=(sqrt(3)+1)/(2sqrt(2))
A=180-30-105=45
AC/sinB=BC/sinA
AC=BCsinB/sinA=3sqrt(2)0,5/(sqrt(2)/2)=3
AB/sin105=AC/sin30
AB=ACSIN105/sin30=3cos15/0,5=6cos15=3(sqrt(3)+1)/sqrt(2)
cos15=(sqrt(3)+1)/(2sqrt(2))