This algebra-related article contains minimal information concerning its topic. You can help the Mathematics Wikia by adding to it. Definition The unit circle is a set of points satisfying the equation: $ x^2 + y^2 = 1 $ A unit circle showing the coordinates of certain points. A unit circle showing the relationship of the trigonometric functions. Retrieved from "https://math.wikia.org/wiki/Unit_circle?oldid=25419" Categories: Algebra stubs Circles Geometry Trigonometry Mathematics Trigonometry stubs Stubs Community content is available under CC-BY-SA unless otherwise noted.