sin(A) / a = sin(B') / b'
where a is the side opposite to the angle A and B is the side opposite to the angle B'. So
sin(45)/16.5 = sin(B')/22
B' = 70.53
However, notice that B' in your triangle is an obtuse angle, so you also need to know the property of sine
sin(B') = sin(180 - B')
So another B' that can work is:
sin(70.53) = sin(180 - 70.53)
sin(70.53) = sin(109.47)
So B' = 109.47.
It seems that the closest one in your answer is 109.95 so I think out of elimination, B is your answer.
