Such a simple equation.........yet an important one...........difference of squares.........................relative................................

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Frequently, especially in trigonometry, the unit circle is the circle of radius one centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane. The unit circle is often denoted S¹; the generalization to higher dimensions is the unit sphere.

Unit circle - Wikipedia

https://en.wikipedia.org/wiki/Unit_circle

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Unit circle - Wikipedia

https://en.wikipedia.org/wiki/Unit_circle

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Frequently, especially in trigonometry, the unit circle is the circle of radius one centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane. The unit circle is often denoted S¹; the generalization to higher dimensions is the unit sphere.

‎In the complex plane · ‎Trigonometric functions ... · ‎Circle group · ‎Complex dynamics

You visited this page on 8/23/17.

Unit Circle - Math is Fun

https://www.mathsisfun.com/geometry/unit-circle.html

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The "Unit Circle" is a circle with a radius of 1. Being so simple ... Also try the Interactive Unit Circle. unit circle center ... x² + y² = 1 (the equation of the unit circle).

‎Radians · ‎Interactive Unit Circle · ‎Sine, Cosine and Tangent in ...

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Unit Circle | Equation of Unit Circle | TutorVista.com

www.tutorvista.com/content/math/the-unit-circle/

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The concept of unit circle is very frequently used in maths, especially in trigonometry. A unit circle is a circle with unit radius, centered at origin. In other words, a ...