Unit Circle Manipulations Demo

Unit Circle Manipulations Demo
Loading the math board and drawing, please wait…
2016-07-04 05:40
This example demonstrates the relationship between points on the unit circle, angles, and trigonometric values through interactive manipulation. It involves core math concepts like trigonometric functions, unit circle, geometric transformations, and matrix operations. Construction highlights include commands like Intersect, Circle, Point, Segment, Angle, Slope, Rotate, and objects such as A, UnitCircle, CosAlpha, etc. Ideal for high school mathematics education to visualize and understand the connection between trigonometry and geometry, enhancing learning effectiveness.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Circle(A, 1) → UnitCircle
  3. Point(UnitCircle) → C
  4. Segment(A, C) → f
  5. Segment(A, CosAlphaAndSinAlpha) → AlphaSegment
  6. Angle(C, A, CosAlphaAndSinAlpha) → AngleAlpha
  7. Segment(A, CosBetaAndSinBeta) → BetaSegment
  8. Angle(C, A, CosBetaAndSinBeta) → AngleBeta
  9. Slope(AlphaSegment) → TanAlpha
  10. Slope(BetaSegment) → TanBeta
  11. Intersect(UnitCircle, i, 2) → CosGammaAndSinGamma
  12. Intersect(UnitCircle, i, 1) → CosGammaPlus180AndSinGammaPlus180
  13. Segment(CosGammaAndSinGamma, CosGammaPlus180AndSinGammaPlus180) → j
  14. Angle(C, A, CosGammaAndSinGamma) → AngleGamma
  15. Slope(i) → TanGamma
  16. Segment(A, CosGammaAndSinGamma) → GammaSegment
  17. Segment(A, CosGammaPlus180AndSinGammaPlus180) → GammaSegmentTwo
  18. Rotate(C, Theta, A) → CosThetaAndSinTheta
  19. Angle(C, A, CosThetaAndSinTheta) → AngleTheta
  20. Segment(A, CosThetaAndSinTheta) → ThetaSegment
  21. Slope(ThetaSegment) → TanTheta