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2:59
YouTube
polymathematic
What Are Sine, Cosine, Tangent
Is there a nice little way to understand sine and tangent? Yes — and the first step is simple: imagine a circle. Actually, don’t imagine it. Look at one. We’ve got a circle, and we’ve marked off a portion to show a given angle — say about 50°. As that line extends to the edge of the circle, it hits a particular point, maybe (0.645, 0 ...
14.7K views
5 months ago
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