Угол падения 90/2=45 градусов
sina/sinb=n sinb=sina/n=0,71/1,6=0,444 b=arcsin(0,444)=26 градусов
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Угол падения 90/2=45 градусов
sina/sinb=n sinb=sina/n=0,71/1,6=0,444 b=arcsin(0,444)=26 градусов