Let ray of light given by the vector $ \overrightarrow{A}= 6 \sqrt 3 \hat i+8 \sqrt 3 \hat j -10 \hat k $ be incident on the $X-Y$ plane . Which is the boundary between two transparent medium. Medium 1 in $ Z > 0$ has refractive index of $\sqrt 2$ and medium 2 with $Z > 0$ has refractive index of $\sqrt 3 $. What is the angle of refraction in medium 2.
