what's the name for 2 pi

Question

tkhunny · Answer

"Steve"?

anonymous · Answer

NOO!!!!!!

anonymous · Answer

lol

tkhunny · Answer

Seriously, it's just $2\pi$.  Is there a need to call it something else?

anonymous · Answer

yes that's correct....look it up

anonymous · Answer

Tau

jim_thompson5910 · Answer

from these pages, it looks like tau, but not 100% on that myself http://constitutionclub.org/2011/07/02/even-math-is-changing/ http://math-blog.com/2010/06/28/forget-pi-here-comes-tau/

anonymous · Answer

Also 'full circle' / '1 complete period of sine or cosine function,' etc.

anonymous · Answer

"360º" and so on, and so forth . . .

tkhunny · Answer

I still like "Steve".

anonymous · Answer

Steve is a good name too. I think Tau might have an advantage - still being a Greek letter and all that. You know how mathematical constants can be . . .

tkhunny · Answer

Why do we use $2\pi r$ when $\pi d$ is perfectly satisfactory - except that it is not a natural result of the calculus derivation.  $\dfrac{d}{dr}\pi r^{2} = 2\pi r$.  It would be counter productive to replace either $2r = d$ or $2\pi = \tau$

anonymous · Answer

How about angles around the unit circle? Quarter circle: π/2 or τ/4?

anonymous · Answer

or total radian of the circle (?)