Very welcome! I teach elementary trig using Tau and Plus's endorsement will help convince my students that I'm talking sense. I hope Plus now becomes 'Tau Manifesto compliant' meaning Pi is not referred to except for historical reasons.

Robin Whittywww.theoremoftheday.org

## Tau and Pi

Very welcome! I teach elementary trig using Tau and Plus's endorsement will help convince my students that I'm talking sense.

I hope Plus now becomes 'Tau Manifesto compliant' meaning Pi is not referred to except for historical reasons.

Robin Whitty

www.theoremoftheday.org