I mentioned on the other thread, but 22/7 is a closer approximation to pi than 3.14.
It’s also when they celebrate pi day in Europe, since they tend to follow the day/month standard when listing dates.

@cengland0 Where on the calendar does 355/113 fall?

But no, I disagree strongly. Tau is not a mathematical constant. It is used all over the place for all sorts of reasons. Pi is pi is pi, except when it’s big Pi as the series multiplication operator.

And yes, pi is often multiplied by 2, but it shows up in a lot of other contexts without the 2. That’s why it’s the base constant instead of 2*pi.

Still March 14, 15,929/100,000ths through the 24 hours of the day or at 13,762.656 seconds into the day. That’s also at 3:49 am and 22.656 seconds.

Regarding Pi, you could have said it’s approximately .785 and just multiply it by 4 some of the time. Similarly, anytime you need Pi, you can use Tau/2.

Converting decimal to radians is:
90 = 1/4 tau, pi / 2
180 = 1/2 tau, pi
270 = 3/4 tau, 1 1/2 pi
360 = tau, 2 pi

Seems much easier to remember the tau version than the pi one.

Close enough?

@phendrick Forgot to give credit; the above is an early XKCD comic; number 217, to be exact.

Plus, it my birthday!

@mfladd So, happy birfday.

You having pi or cake?

@mfladd @phendrick Something that just approximates pi.

I mentioned on the other thread, but 22/7 is a closer approximation to pi than 3.14.

It’s also when they celebrate pi day in Europe, since they tend to follow the day/month standard when listing dates.

@Limewater 355/113 = 3.1415929 – even closer.

But we should really be celebrating tau day which would be June 28. In maths, it’s very common to multiple pi by 2. Tau is already 6.28.

For example, a full sine wave or cosine wave in radians is 6.28. A circle’s circumference is 6.28 x r.

@cengland0 Where on the calendar does 355/113 fall?

But no, I disagree strongly. Tau is not a mathematical constant. It is used all over the place for all sorts of reasons. Pi is pi is pi, except when it’s big Pi as the series multiplication operator.

And yes, pi is often multiplied by 2, but it shows up in a lot of other contexts without the 2. That’s why it’s the base constant instead of 2*pi.

@Limewater

Still March 14, 15,929/100,000ths through the 24 hours of the day or at 13,762.656 seconds into the day. That’s also at 3:49 am and 22.656 seconds.

Regarding Pi, you could have said it’s approximately .785 and just multiply it by 4 some of the time. Similarly, anytime you need Pi, you can use Tau/2.

Converting decimal to radians is:

90 = 1/4 tau, pi / 2

180 = 1/2 tau, pi

270 = 3/4 tau, 1 1/2 pi

360 = tau, 2 pi

Seems much easier to remember the tau version than the pi one.