Cosine Rule – Finding Angles

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

              Students learn how to derive and apply the Cosine Rule to find missing angles in triangles.

              Later, 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
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