What is the Brewster angle for air to glass transition?

Refractive index of glass, $\mu=1.5$

Brewster angle = θ

Brewster angle is related to refractive index as:

$\tan \theta=\mu$

$\theta=\tan ^{-1}(1.5)=56.31^{\circ}$

Therefore, the Brewster angle for air to glass transition is 56.31°.