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Unit Circle Exploration by Barbara E Jones (2)

Unit Circle Exploration by Barbara E Jones (2)
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2018-12-04 02:09
CircleTrigonometryCoordinate GeometryGeometric Construction
This example demonstrates the relationship between coordinates and angles on the unit circle by dragging the red point. Core math concepts include the unit circle, trigonometric functions (sin, cos), angles, and coordinate geometry. It uses GeoGebra commands like Intersect, Point, Circle, Angle, Polygon, and Segment. Suitable for high school students learning trigonometry and coordinate geometry.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → O
  2. Point(xAxis) → B
  3. Circle(O, B) → c
  4. Point(c) → A
  5. Angle(B, O, A) → α
  6. Polygon(O, C, A) → poly1, adj, opp, hyp
  7. Segment(O, S) → sinα
  8. Segment(O, C) → cosα
  9. Segment(A, O) → a
  10. Angle(A, C, O) → β