2. In the multilayer structure below, given 0,-20 degrees, and ni= 1, n2 = 1.25, n3=1.3, n4= 1.2, ns = 1.25, n6=1.35, n7= 1.4, n8 = 1.45, ng=1.4, n1o =

1, find the angle 010. You should apply the Snell's law nisin theta,=n2 sine2 multiple times.