Expert pls answer me quickly. If the angles of a triangle ABC are in the ratio 11:13:12,then the unit digit of smallest angle is.

Ratio of angles = 11:13:12
Sum of angles in a triangle= 180 degree
Sum of ratio= 11+13+12
= 36
Angle 1 = 11/36 * 180
= 55
Angle 2 = 13/36 * 180
= 65
Angle 3 = 12/36 * 180
= 60