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Exploring Basic Trigonometric Ratios

Exploring Basic Trigonometric Ratios
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2016-12-12 02:09
AngleTrigonometryGeometric Construction
This example uses GeoGebra to demonstrate the basic trigonometric ratios. It involves the sine, cosine, and tangent functions. By using commands such as Intersect, CircleSector, Line, and OrthogonalLine, the example clearly illustrates these concepts. Suitable for students in middle school and above to learn the basic properties of trigonometric functions.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Point(xAxis) → B
  3. Point(yAxis) → C
  4. CircleSector(A, B, C) → c
  5. Point(c) → D
  6. Line(A, B) → f
  7. OrthogonalLine(D, f) → g
  8. Intersect(g, f) → E
  9. Intersect(c, f) → F,
  10. Polygon(D, A, E) → poly1, hypotenuse, adjacent, opposite
  11. Angle(E, A, D) → α
  12. PointIn(c) → Pointc
  13. Distance(opposite, adjacent) → a