This a triangle worth committing to memory The angles are 90-60-30 and the sides are in the ratio 2:sqrt3 : 1 where 1 is the shortest side opposite the 30 degree angle,
So v : 16 = 1 : 2 giving v = 8
and u : v = u : 8 = sqrt3 : 1 giving u = 8 sqrt 3
Its a