Most modern alignment racks have a setting that you can change to see measurements in degrees or inches. I would say if the guy running the rack can't figure out how to change that setting maybe you should look for someone else to align the car.
Yes, perhaps "most" do. But not all. And knowing the guys at the shop I hang out with, I won't go anywhere else with my car. In fact, I'm lucky in that they let me roll it up on the rack, help me get it set up & then let me do it myself. I've come up with 6 different answers to that question, every one from a reputable man. So I'm still playing with it, trying to get to it handle the way I want and just using the numbers to keep it all even & get an idea of what changes have what effect. I'm getting closer each time....
Actually, my idea--which I keep forgetting to do ---is call VBP and ask them to update their info to degrees also.