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.
Lesson DownloadsDownload Lesson Plan Download PowerPoint Download Notebook Download Flipchart Download Worksheet
Scheme of Work Link
Trigonometry - Non-Right-Angled Triangles SoW
Related Blog
Solving Problems with Non-Right-Angled Triangles Blog 
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