4.2, 4.4 – The Unit Circle, Trig Functions
4.2, 4.4 – The Unit Circle, Trig Functions. The unit circle is defined by the equation x 2 + y 2 = 1. It has its center at the origin and radius 1. (0 , 1) (1 , 0) 1 (0 , 1). (1 , 0). 4.2, 4.4 – The Unit Circle, Trig Functions.
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