What is the term for a circle with a radius of 1 centered at (0,0) used to define trigonometric functions for all real numbers?
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Unit circle
The unit circle allows trigonometry to extend beyond right triangles to angles of any magnitude. Points (x, y) on the circle correspond to (cosθ, sinθ).
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- What is the name of the circle with radius 1 and center (0,0) that defines trigonometric functions for all real numbers?