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Unit Circle Trigonometry by Brian Sterr

Unit Circle Trigonometry by Brian Sterr
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2016-02-10 03:25
CircleTrigonometryGeometric Construction
This example demonstrates the basic trigonometric ratios for points on the unit circle, in degrees. It involves core trigonometric concepts and is constructed using GeoGebra commands such as Rotate, Ray, Angle, and Segment. Suitable for students at the middle school level and above to learn about the basic properties of trigonometric functions.

GeoGebra Commands & Parameters

  1. Rotate(B, (θ * pi / 180), O) → P
  2. Ray(O, P) → a
  3. Angle(B, O, P) → α
  4. Angle(P, O, If[90 < θ < 270, A, B]) → β
  5. Angle(O, C, P) → γ
  6. Segment(C, P) → b