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Unit Circle
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Description: Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane. The circle is divided into four quadrants by the x- and y- axes. The circle can be labeled and used to find the six trigonometric values (sin, cos, tan, cot, sec, csc, cot) at each of the quadrantal angles.
Source: Florida Center for Instructional Technology Clipart ETC (Tampa: University of South Florida, 2007)
Keywords: unit circle, circles, radius of 1, quadrants, trigonometry, trig, trigonometric functions, trig ratios, ratio, analytic geometry, quadrantal angles, coordinate plane, sin, sine, cos, cosine, tan, tangent, sec, secant, csc, cosecant, cot, cotangent
Copyright: 2009, Florida Center for Instructional Technology. See license.
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Clipart ETC is a part of the Educational Technology Clearinghouse and is funded by various grants. Produced by the Florida Center for Instructional Technology, College of Education, University of South Florida. Email the project manager.