Math / Trigonometry / Tau versus Pi



Pi Day vs. Half Tau Day « Math Goes Pop!
www.mathgoespop.com

The Pi Manifesto - No, really, pi is right!
www.thepimanifesto.com

Happy Pi Day! (or just half-tau?) | Phi - The Math Magazine
phi.qount-it.com

Pi Day? The π is a lie… Happy Half Tau Day!
halftauday.com


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