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Unit Circle by Mr. Wright

Unit Circle by Mr. Wright
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2015-04-25 21:57
CircleAngleTrigonometry
This example demonstrates the geometric construction of a unit circle. Key mathematical concepts include circles, angles, and trigonometric functions. Using GeoGebra commands such as Intersect, Point, Circle, and Angle, the example dynamically shows the relationship between points on the unit circle and angles. Suitable for students in middle school and above studying geometry and trigonometry.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Point(xAxis) → B
  3. Circle(A, B) → c
  4. Point(c) → C
  5. Angle(B, A, C) → α
  6. OrthogonalLine(C, xAxis) → a
  7. Intersect(a, xAxis) → D
  8. Polygon(A, C, D) → poly1, d, a_1, c_1