Basic Trigonometric Ratios by Disha Rathi

Basic Trigonometric Ratios by Disha Rathi
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2016-12-01 22:20
This example demonstrates the geometric construction and calculation of side lengths and angle relationships in right triangles, involving core math concepts like trigonometric function definitions, side ratios, and angle measurement. It uses commands such as Segment, OrthogonalLine, Rotate, Angle, Line, Intersect, Polygon, and Point to build the triangle and label sides a, b, c, and angles α, β. Suitable for middle school students and above learning basic trigonometry or geometric constructions.

GeoGebra Commands & Parameters

  1. Segment(A, B) → a_2
  2. OrthogonalLine(B, a_2) → b_2
  3. Rotate(B, α, A) → B'
  4. Angle(B, A, B') → β
  5. Line(A, B') → c_2
  6. Intersect(b_2, c_2) → C
  7. Polygon(A, B, C) → poly1, c, a, b
  8. Point(a) → D