http://www.space.com/31765-ancient-babylonians-tracked-jupiter-with-math.html [br][br]1) Here I built the geometry using the angle 10.45.[br][br]2) I incorporated i - geometry and connected the geometry, using the angle of 10.45, making the Red Triangle.[br][br]3) See a = 2 ; a = 6 ; Notice the Two Numbers that appear in the Top Equation.