Lesson Details


  • Name: Cosine Rule 1
  • Code: M.4.11.T2.6
  • Specification Reference: G22
  • Keywords: Angle, side, cosine, formula, substitute.
  • Objectives: 1. To learn the cosine rule in both forms. 2. To decide whether the cosine rule can be used in triangles. 3. To apply the cosine rule to find missing sides.
  • Competency: To learn the cosine rule in both forms.
  • Proficiency: To decide whether the cosine rule can be used in triangles.
  • Mastery: To apply the cosine rule to find missing sides.

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