Remember that cos(a+b)=cos(a)cos(b)-sin(a)sin(b) | Hacker News

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		marginalia_nu on March 29, 2022 \| parent \| context \| favorite \| on: Implementing Cosine in C from Scratch (2020) Remember that cos(a+b)=cos(a)cos(b)-sin(a)sin(b)

LeifCarrotson on March 31, 2022 [–]

Ah, now it makes sense. Thanks for the reminder of 8th grade trig...it's been a while!

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