This is a very cool program.

But I think I see a problem. I may be missing something, but because the cable acts only in tension, MA is proportional to sin beta. I don't know where the "inversely proportion to sin gamma" comes from -- it seems like it would require some kind of rigid linkage for this to be true.

Sin beta is the force perpendicular to the effective arm length, which is why you maximize MA by setting up the yoke length so that the straddle cable is perpendicular to the arm.

Am I misunderstanding something?