Just to remind you, my method uses extremely simple geometry to create pi, in fact, it only uses the pythagorean theorum Just for your information, I'm currently in "freshman geometry" in high-school, I haven't reached calculus
(I must have fooled you )
The way I set up the problem, is always negative. However, since the pythagorean theorum uses I decided it didn't matterAnd one thing I spoted is that you set , that's equal to for real numbers .