A Conceptual Analysis of Trigonometric Functions

Larson, R. (2004). McDougal Littell Algebra 2. a.)Angle and Measure. i.) An angle is determined by rotating a ray (half-line) about its endpoint. ... and unit circle geometry. An educator would hope that a student would construct a right triangle with an angle of 20º and compare the sides, or on a unit circle on the Cartesian plane construct a ... ................
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