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Primary Trigonometric Ratios by David Peterson

Primary Trigonometric Ratios by David Peterson
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2014-02-12 12:26
AngleTrigonometryGeometric Construction
This applet helps students explore basic trigonometric ratios such as sine, cosine, and tangent through dynamic geometry. Using commands like Rotate, Angle, and Line, students can visually understand the definitions and variations of trigonometric functions. Suitable for middle school and above students to learn basic trigonometric concepts.

GeoGebra Commands & Parameters

  1. Rotate(F, 90*°, C) → A'
  2. Angle(F, C, A') → α
  3. Line(C, A') → a_2
  4. Point(a_2) → B
  5. Line(C, F) → b_2
  6. Point(b_2) → A
  7. Polygon(B, C, A) → poly1, a_1, b_1, c_1
  8. Angle(B, A, C) → β
  9. Angle(C, B, A) → γ
  10. Distance(A, B) → c
  11. Distance(A, C) → b
  12. Distance(B, C) → a

AI Drawing Prompt Reference

Draw a right triangle with labeled angles and sides, rotate one angle by 90 degrees to form another, label the corresponding sides, and connect the points to create two triangles, demonstrating the basic definitions and relationships of sine, cosine, and tangent.
The prompt above was compiled from the original drawing commands and is for reference only.