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I knew you were gonna pull trigonometry out of your ass And I actually love trig
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If you write: 0, 1, 2, 3, 4 Sin 4, 3, 2, 1, 0 Cos Square each number and divide by two you get the whole unit circle. It's a super easy way of remembering it. You just either add or subtract by pi or 2pi
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https://imgur.com/a/Bawnx
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Unit circle, how could you?!?!?
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I see what you did there.