PV Tilt Angles

It's a quiet rainy Sunday after noon. Linda is in the kitchen making goodies (Beef Pot Roast), and I'm at the dining room table figuring out seasonal tilt angles for the new PV array. Using some references I had put up in 2000 on my Find Sun page, I determined my Latitude and Longitude to be 44.68 N Latitude & 74.7 W Longitude. I then went to Wattsun's page to get seasonal angles. There is a neat calculator that lets me convert those angles into lumber dimensions, assuming I want one 90 degree angle. I'm not sure that I do. Given a 90 degree angle, I worked out 3 different configurations, Dec/Jan, March & Sept, & June/July. Given a 3' high PV panel "c", and one 90 degree angle "C", and 3 seasonal "A" angles of 30, 45, and 60 degrees, I get "b" and "a" dimensions of 1.5', 2.12', and 2.6'