high School⏱ 4 min

Unit Circle

Where sin and cos come from

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(0.71, 0.71)cos = 0.707sin = 0.70745°
sin⁡(45°)=0.7071,cos⁡(45°)=0.7071\sin(45°) = 0.7071,\quad \cos(45°) = 0.7071

Point on a circle with radius 1. Cosine = x-coordinate, sine = y-coordinate.