equation is: n1sino1=n2sino2

Question

(o means theta)
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Given info:
So n1=1.5 n2=1.0
o1(incident angle)=20
solve for o2

Can you check this:
n1sin20=n2sino2
1.5x0342=1sino2
.513=sino2
inverse sin(.513)
o2=30.86 degrees

is this right?

Answer 1

N1 sin A1 = N2 sin A2
1.5 sin 20 = 1 sin A2
1.5 sin 20 = .513
sin^-1 .513 = 30.8 yes

Answer 2

thanks for the check!