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Angle of Elevation and Depression by Lee Ka Hei

Angle of Elevation and Depression by Lee Ka Hei
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2017-04-27 14:48
AngleTrigonometryGeometric Construction
In collections Unit 9: Right Triangles and Trigonometry
This example demonstrates how to construct and analyze geometric figures related to the angle of elevation and depression using GeoGebra. The key math concepts involved include trigonometric functions, similar triangles, and angle measurement. The construction utilizes GeoGebra commands/objects such as Line, Point, Segment, and Angle. It is suitable for high school students learning the application of trigonometric functions and geometric constructions.

GeoGebra Commands & Parameters

  1. Line(G, H) → b
  2. Point(Ray[E_1, G]) → E
  3. Point(c) → D
  4. Segment(A, B) → e
  5. Point(d) → C
  6. Angle(C, B, A) → α
  7. Angle(D, A, B) → β
  8. Segment(C, B) → f
  9. Segment(A, D) → g
  10. Point(b) → J
  11. Segment(E, J) → h