That looks like about the distance between trees I look for.
If you were comfortable, adjust the ridgeline where it's tight at that point, and you can repeat the angle.
I've never been one to place too much emphasis on following a fixed formula for angles/distances for suspension. Find what's comfortable for you and then set up so you can find it again. The measurements are a suggested starting point - not a rule for your (individual) comfort IMHO.