DHA$13$

The surface $x=0$ separates two perfect dielectrics. For $x>0$ let $lo{n}_{rl}=3,$ while $lo{n}_{r2}=5$ where If $E_1$ surface $($e$)D_{N2}($f$)D_{T2}($g$)D_2($h$)P_2($i$)$ the angle ${}_2$ between $E_2$ and normal to the surface. $($this question is from electro magnetic field theory and i need solutions for this question in step by step$)$