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Sine and Cosine Ratios by Jason L. Bouffard

Sine and Cosine Ratios by Jason L. Bouffard
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2019-03-25 09:04
AngleTrigonometryGeometric Construction
This example demonstrates the concept of sine and cosine ratios. By constructing the sides and angles of a triangle, it visually illustrates the definitions of sine and cosine. Commands used include Line, OrthogonalLine, Segment, Intersect, and Angle. Suitable for students in middle school and above learning trigonometry.

GeoGebra Commands & Parameters

  1. Line(A, B) → f
  2. OrthogonalLine(C, f) → g
  3. Segment(A, C) → h
  4. Intersect(f, g) → D
  5. Segment(A, D) → i
  6. Segment(C, D) → j
  7. Angle(A, D, C) → α
  8. Angle(D, C, A) → β
  9. Angle(D, A, C) → γ