Let's Face It: Your Trig Functions Have Been Lying To You

Let's Face It: Your Trig Functions Have Been Lying To You
math-memes, trigonometry-memes, euler-memes, complex-numbers-memes, calculus-memes | ScienceHumor.io

Behold, the moment every math student dreads—when those comfortable trigonometric functions get unmasked to reveal their true identity: eix. Euler's identity strikes again! You thought you were getting cozy with sin(x) and cos(x), but surprise! It was complex exponentials in disguise all along. This is the mathematical equivalent of finding out your friendly neighborhood barista has been a spy the whole time. Twenty years into teaching calculus and I still enjoy watching students' souls leave their bodies when they learn that all those trig functions they memorized were just the same thing wearing different hats.

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