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Trigonometric Ratios

Trigonometric Ratios
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2020-04-28 16:22
AngleFunctionTrigonometry
This example demonstrates the trigonometric ratios of sine, cosine, and tangent. Using GeoGebra commands such as Intersect, Circle, and Rotate, it shows how to construct trigonometric function graphs. Suitable for middle school and above students to learn basic concepts and construction techniques of trigonometric functions.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Circle(A, Radius) → c_1
  3. Intersect(c_1, xAxis, 2) → B
  4. Rotate(B, α, A) → B'
  5. Angle(B, A, B') → β
  6. Segment(B', A) → c
  7. Segment(B', C) → a
  8. Angle(B', A, B) → γ
  9. Segment(A, C) → b
  10. Intersect(c_1, xAxis, 1) → D
  11. Segment(D, A) → f