1. The problem statement, all variables and given/known data What is the ratio of the intensity at this point to the intensity at the center of a bright bridge 2. Relevant equations GIVEN: Wavelength=6.9x10^-7m d=0.00014m (distance between slits) L=12m (Length to screen/point) Y=14mm EQUATION: I=Io cos^2(phi/2) [(Sin (B/2))/(B/2)] I/Io=cos^2(phi/2) [(Sin (B/2))/(B/2)] 3. The attempt at a solution I have phi, solved for b/2 and plugged it in and did everything. I STILL GOT IT WRONG!?!?! is my equation wrong??