[VA] SRC#006- Pi Day 2020 Special: A New Fast Way to Compute Pi

[EdS2]

Aha! Thank you very much - I am indeed enlightened! (I might have spotted, but failed to spot, that the computations are complementary. I think the 5 threw me, but of course it arises from the denominator of 4.)

[EdS2]

Hmm, I have a question...

(03-14-2020 07:56 PM)Valentin Albillo Wrote:  ...
But sin(x) is not an inverse function like those and won't produce Pi or any fractions of Pi for any real rational or algebraic values of its argument. In other words, there's no rational or algebraic value x for which sin(x) = Pi/4 or Pi/6 or 2/3*Pi, etc.

This is a strong statement, and for me both surprising and interesting: is there any accessible explanation? Is there a term I could search for to find out more?