I had metal number stamps I stamped in the flat top part of my 1/2" bender.

5 5/8 deg = 10.207
11 1/4 deg = 5.126
15 deg = 3.864
22 1/2 deg = 2.613
30 deg = 2
37 1/2 deg = 1.643
45 deg = 1.414
60 deg = 1.555

I round to the 1st decimal place and I know the common ones but I wanted to check myself so I listed all from one chart.

Tom