Which combo of polarizing filters allows most light to pass through? Each orientation is given with respect to vertical unit of following values given are angles: 1. 0, 45, 90 2. 30, 60, 90 3. 180, 0, 180 4. 90, 135, 180 5. 10,20,100 I tried by using the formulas: I1=0.5Inought I2=I1*cos^2(theta) I3=I2*cos^2(theta) so bascially I multiplied cos^2(theta1) *cos^2(theta2) *cos^2(theta3) and chose the biggest value. Am I doing this right? Can I just plug in the angles given directly or do I have to subtract something from them?