A fun proof of the known geometry fact that the circumference of a circle is pi times its diameter, or 2 * pi * r. I am definitely aware that there are easier methods, like parametrizing the circle or solving the arc length integral in polar coordinates. But the advantage of the method I presented is that it should be easy to follow for someone who hasn’t seen parametric equations before. #math #calculus #integral #geometry #trigonometry #proof
4:35
A fun proof of the known geometry fact that the circumference of a circle is pi times its diameter, or 2 * pi * r. I am definitely aware that there are easier methods, like parametrizing the circle or solving the arc length integral in polar coordinates. But the advantage of the method I presented is that it should be easy to follow for someone who hasn’t seen parametric equations before. #math #calculus #integral #geometry #trigonometry #proof
15K views2 months ago
TikTokelectricalmath
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0:18
When is Pi2Day, and why is it important? Every year on June 28, Pi Network celebrates Pi2Day, a kind of mid-year check-in that builds on the original Pi Day (March 14). It’s supposed to be a clever nod to math (3.14 → 6.28), but it’s also become a key moment for the Pi community. Since 2023, the core team has used the day to showcase progress and rally users behind major initiatives. In 2024, Pi2Day, for example, featured a “Progress to Open Network” campaign where millions of users (known as “p
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