the two angles B that are such that sin(B) = (b/a) sin(A), using the numbers for a,b,A are
13.91 and 166.09 degrees.
The interior angles of a triangle sum to 180 degrees. You are given one of it's angles is 33.3 degrees.
166.09 + 33.3 = 199.39 > 180
so clearly the correct angle is 13.91 degrees.