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Firetruck and Trigonometric Functions

Firetruck and Trigonometric Functions
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2018-04-15 15:01
FunctionTrigonometryGeometric Construction
This example uses a firetruck to demonstrate sine, cosine, and tangent functions. It involves core trigonometric concepts and is constructed using GeoGebra commands such as points, rays, and vectors. Suitable for middle school and above students to learn about the properties and applications of trigonometric functions.

GeoGebra Commands & Parameters

  1. Point(Sequence[((0.5 * cos(i°)), (0.5 * sin(i°))), i, 0, 90]) → R
  2. Ray((2 * R), (3 * R)) → ray
  3. Point(ray) → P
  4. Segment(O, P) → rod
  5. Segment(P, Q) → string
  6. Angle((1, 0), O, P) → α
  7. Angle(P, Q, O) → β
  8. Segment(O, Q) → distance
  9. Vector(C, D) → u
  10. Vector(D, C) → v
  11. Segment(C, D) → f