Sine Rule Ambiguous Case by Mr Hardman

Sine Rule Ambiguous Case by Mr Hardman
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2015-08-06 05:11
This example demonstrates the ambiguous case of the sine rule in triangle construction, where given two angles and one side (AAS or SSA), there may be two possible solutions, one solution, or no solution. It involves core mathematical concepts such as the sine rule, triangle similarity, and the relationship between angles and side lengths. The construction uses GeoGebra commands like Segment, Line, OrthogonalLine, Circle, Intersect, Angle, Distance, and Vector. It is suitable for high school mathematics education to understand the limitations and practical applications of the sine rule.

GeoGebra Commands & Parameters

  1. Segment(A, C) → a
  2. Segment(C, B) → b
  3. Segment(A, B) → c
  4. Line(A, B) → d
  5. OrthogonalLine(C, d) → e
  6. Circle(C, B) → f
  7. Intersect(f, d, 2) → D
  8. Segment(C, D) → g
  9. Angle(B, A, C) → α
  10. Distance(A, C) → distanceAC
  11. Distance(B, C) → distanceBC
  12. Distance(B, A) → distanceBA
  13. Angle(C, B, A) → β
  14. Angle(C, D, B) → γ
  15. Segment(C, B) → l
  16. Segment(B, D) → h
  17. Circle(C_1, B_1) → f_1
  18. Distance(B_1, C_1) → distanceBC_1
  19. Segment(C_1, B_1) → l_1
  20. Segment(A, C) → m
  21. Segment(B, A) → n
  22. Vector(E, F) → u