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Trigonometric Ratios Given Angles

Trigonometric Ratios Given Angles
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2012-03-17 12:18
TriangleAngleTrigonometry
This GeoGebra applet was created by Cassie Duncil and Alaina Shelton from Lawrence High School in Lawrence, KS. It is used for teaching basic trigonometric ratios. Through steps such as rotation, angle measurement, and segment construction, students can intuitively understand the concept of trigonometric ratios. The applet involves core math concepts such as triangles, angles, and trigonometry. Suitable for middle and high school students.

GeoGebra Commands & Parameters

  1. Line(A, B) → a
  2. OrthogonalLine(A, a) → b
  3. Rotate(A, -α, B) → A'
  4. Angle(A', B, A) → β
  5. Line(B, A') → c
  6. Intersect(c, b) → C
  7. Segment(A, B) → d
  8. Segment(B, C) → e
  9. Segment(C, A) → f
  10. Angle(B, A, C) → γ
  11. Angle(A, C, B) → δ