When a light ray in water $)=(1\mathrm{.}33$ enters glass with index of refraction $1\mathrm{.}60,$ what is the greatest angle of refraction $($in degrees$)$ that can occur?

$90\mathrm{.}0$

$38\mathrm{.}7$

$56\mathrm{.}2$

$0\mathrm{.}0$

$52\mathrm{.}2$