Cosine Rule – Finding Angles

Cosine Rule – Finding Angles
Cosine Rule – Finding Angles
Cosine Rule – Finding Angles
Cosine Rule – Finding Angles

What's Included

  • Smart Notebooks Presentation
  • Interactive Excel File
  • Activ Inspire Flipchart
  • Lesson Plan
  • Microsoft PowerPoint Presentation
  • Differentiated Worksheet

Cosine Rule – Finding Angles

Students learn how to derive and apply the Cosine Rule to find missing angles in triangles.  As learning progresses students begin to calculate a combination of angles in adjoining triangles.
Differentiated Learning Objectives
  • All students should be able to calculate an unknown angle in a triangle using the Cosine rule.
  • Most students should be able to calculate an unknown angle or a bearing using the Cosine rule.
  • Some students should be able to derive and apply the Cosine rule for triangular shapes.
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Scheme of Work Link
Trigonometry - Non-Right-Angled Triangles
Related Blog
Solving Problems with Non-Right-Angled Triangles 
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