Question 1131379
C/sin C=50/sin 72=52.57
Therefore if b=51 51/sinB=52.57
so sin B=51/52.57, or 0.9701 and B=75.96 deg

That would make A 180-128.53=51.47 deg
and a would be a/sin 51.47=52.57
a=41.12