Malus's Law is given below. It has the form of a $cos^2$ curve. Move the sliders in the online calculator or Excel file to investigate the changes in the curve. Then, match the variables x, A, B, C, D and Illum to their respective descriptions.\
Illum = Acos(B*x + C)$^2$ + D\
frequency\
X-offset (optical rotation)\
Y-offset\
amplitude\
angle between polarizers\
Intensity of light passing through polarizers