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Mathematics · Measurement & Trigonometry
Sine & Cosine Rules, Years 10–11
Students drag the vertices of a non-right triangle and observe the sine and cosine rules update live, with optional worked calculations for sides and angles. The full interactive is available to licensed Education Universe users.
Years 10–11Explorer
Learning outcomes
- Apply the sine rule to non-right triangles.
- Apply the cosine rule to non-right triangles.
- Choose the appropriate rule for a problem.
Teaching guidance
Give students a triangle with three known values and ask which rule they need before revealing the working.
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Sine & Cosine Rules is one of the licensed interactives in The Education Universe. This page describes it; teachers use it in lessons and classes with a licence or the free trial.