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Sine Ratio - Given Angle

Sine Ratio - Given Angle
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2020-06-25 03:18
AngleTrigonometryGeometric Construction
This example demonstrates the concept of sine ratio. A right triangle is constructed to show the sine value of a given angle. GeoGebra commands such as Ray, Point, Segment, and OrthogonalLine are used to build the triangle and measure the angle. Suitable for middle school and above students to learn trigonometry.

GeoGebra Commands & Parameters

  1. Ray(B, B_1) → a_1
  2. Point(a_1) → A
  3. Segment(A, B) → c
  4. OrthogonalLine(B, c) → c_2
  5. Point(c_2) → D
  6. Ray(B, D) → d
  7. Point(d) → C
  8. Polygon(C, A, B) → poly1, b, e, a
  9. Angle(B, A, C) → α
  10. Angle(A, C, B) → β
  11. Angle(C, B, A) → γ