Unit Circle Labeled With Quadrantal Values
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Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. At each quadrantal angle, the coordinates are given, but not the angle measure. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.
Keywords
circles, cot, tangent, degrees, Degree, Sine, Tan, analytic geometry, trigonometry, ratio, quadrants, radian, radians, trig ratios, trig, sin, cos, cosine, sec, csc, special angles, secant, coordinate plane, unit circle, radius of 1, trigonometric functions, quadrantal angles, cosecant, cotangent, 45°Galleries
Unit CirclesSource
Florida Center for Instructional Technology Clipart ETC (Tampa: University of South Florida, 2007)
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