The incident light striking a pane of glass is refracted as shown in the given figure. According to the law of refraction, which of the following statements is correct?

A) nₐ sin θₐ = n_{b} sin θ_{b}
B) nₐ cos θₐ = n_{b} cos θ_{b}
C) nₐ tan θₐ = n_{b} tan θ_{b}
D) nₐ cot θₐ = n_{b} cot θ_{b}