1. The problem statement, all variables and given/known data A 200 mW horizontally polarized laser beam passes through a polarizing filter whose axis is 25 degrees from vertical. What is the power of the laser beam as it emerges from the filter? P=mW 2. Relevant equations I0cos2(theta) I≈E0cos(theta) I=E0cos2(theta) I=P/A=(E02)/(cμ0)=(cε0E02)/2 3. The attempt at a solution I have tried numerous ways and I still cant seem to get it I'm almost positive you must use 65° instead of 25°, and I have ran out of ways for me to do this problem because I don't know how to get my Intensity because we don't know the Area, so I'm sort of stuck .2= E(incident) cos (65) E(incident)= .473 ---> wrong Thanks!