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Cake day: December 1st, 2023

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  • sik0fewl@lemmy.catoMath Memes@lemmy.blahaj.zoneKreiszahl rule
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    4 hours ago

    It’s just more intuitive to use tau.

    Take for example, the area of a circle.

    If we define circumference as C = τr, then we can actually just use the general formula for an area of a polygon (A = 1/2 p a), which for a circle (infinite-sided polygon) becomes A = 1/2 τr r. C=p and r=a is just circle vs polygon language.

    Of course πr^2 is the same formula, it’s just obscured a little bit more. But now you can see why it’s not always 2π - it’s because we actually did divide tau in half.

    Anyway, I just think its kinda neat. I don’t think tau will catch on though 🙂.