Originally posted by KenLitko
Basically, it is not a calculation... it's a design decision.
....and if your decision proves to be incorrect, either find a buddy with a tablesaw to whack the wing apart and reglue it at the correct angle, or have a prepared statement ready to recite all the reasons why your design's incorrect dihedral was purposely done to enhance it's amazing flying characteristics in other areas that those of lesser knowlege can only fantasize about!