A ray goes from air into water (n = 1.33).

Step 1. At $25^\circ$. $\sin r = \dfrac{0.423}{1.33} = 0.318$, so $r = 18.5^\circ$. The ray turns by $6.5^\circ$.

Step 2. At $75^\circ$. $\sin r = \dfrac{0.966}{1.33} = 0.726$, so $r = 46.6^\circ$. The ray turns by $28.4^\circ$.

Step 3. The rest. The program does every angle. The refraction angles run from $11.2^\circ$ (at $15^\circ$) to $48.5^\circ$ (at $85^\circ$).

What do we see? The turn grows faster than the angle: a slanting ray bends much more. And $r$ never passes about $48.8^\circ$, however large $i$ is.