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Deriving Trigonometric Ratios for 0° and 90°

Deriving Trigonometric Ratios for 0° and 90°
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2017-06-27 22:53
TrigonometryCoordinate GeometryGeometric Construction
This example demonstrates how to derive the sine, cosine, and tangent ratios for 0° and 90° through geometric construction. Key mathematical concepts include trigonometry. It utilizes commands like Intersect, Polygon, Angle, and Segment in GeoGebra. Suitable for middle school and above students to learn the basic properties of trigonometric functions.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Polygon(A, B, C) → poly1, c, a, b
  3. Angle(C, A, B) → θ
  4. Angle(C, B, A) → β
  5. Segment(A, B) → f