Angle of prism A is \\\\(60^o; \\mu=1.524\\\\)\\\\(i\\\\) is angle of incidence.\\\\(r_1\\\\) is angle of refraction.\\\\(r_2\\\\) is angle of incidence during exit from other end.\\\\(e\\\\) is 90^o angle of convergent.\\\\(\\mu=sine/sinr_2\\Rightarrow r_2=41^o\\\\) \\\\(r_1=A-r_2=19^o\\\\)\\\\(\\Rightarrow \\mu=sini/sinr_1\\Rightarrow i=29.75^o\\\\)