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now i have no excuse to be absolutely clueless about trigonometry
wtf how
like the sine rule, that one’s easy, a over sin A is equal to b over sin B, etc
but the cosine rule, while it makes sense, is a lot more complicated than just 3 fractions equaling
cosine rule: cosine(x) = sine(x + 90°), probably
that’s not the one i was thinking of