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Published: 27/08/2013
15 pages

Non right-angled triangles | The sine and cosine rules

A handy run through of the sine and cosine rules, with worked examples. Spread the examples out over a few lessons when learning the topic for the first time, allow students to work through individually at their own pace, or use the whole resource as a great revision aid to tie things together!    

See other resources: Geometry and measure | Trigonometry – sine and cosine rules

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Rob TreacherRob Treacher
Labelling on second Cosine Rule info sheet is incorrect... It says we use the 'SINE' rule when.... It should read 'COSINE' rule.
Posted on 13th November 2017
Dawn DavisDawn Davis
Great as an introduction, with good clear examples.
Posted on 29th March 2017

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