Something I've noticed that no one has ever been able to sufficiently explain to me is taking the sin of multiples of 2-pi.(adsbygoogle = window.adsbygoogle || []).push({});

Sin 6pi, 8pi, 12pi. You get silly answers. For example, sin(6pi) gives you -4*10^-13 instead of 0. I've never been able to get a satisfactory explanation. Most people say "that's weird, must be how it computes it or something". A teacher said something about precision.

Does anyone understand WHY it does this? Anything other than an 84 you get 0. Even my crappy $10 scientific calculators give back 0.

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# Calculators TI-84 multiples of 2-pi

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