n=sin a/ sin b
n=0.707/0.406
n=1.73
sin b2= sin a2/n
sinb2 =0.984/1.73=0.569
b2=arcsin(0.569)=34.68 градуса
n=sin a/ sin b
n=0.707/0.406
n=1.73
sin b2= sin a2/n
sinb2 =0.984/1.73=0.569
b2=arcsin(0.569)=34.68 градуса