Two students are doing a report on the intensity of light passing through a filter. after some research, they each find a different formula for the situation. in each formula, i is the intensity of light passing through the filter, i₀ is the initial light shining on the filter, θ is the angle between the axes of polarization. theo’s formula: i = i₀ cos² θ sany’s formula: i = i₀ - i₀ / csc² θ prove that the two formulas are equivalent.