Students revise how to use the Cosine Rule to calculate unknown lengths and angles in non-right-angled triangles.

As learning progresses they use the Cosine and Area of a Triangle rules.

View revision lesson Download Worksheet

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Students revise how to use the Cosine Rule to calculate unknown lengths and angles in non-right-angled triangles.

As learning progresses they use the Cosine and Area of a Triangle rules.

View revision lesson Download Worksheet

January 1, 2021

Problem solving lesson on two-way tables and frequency trees.

December 20, 2020

Three typical exam questions to revise on plotting quadratic, cubic and reciprocal graphs.

December 2, 2020

Linking cumulative frequency graphs to ratio, percentages and financial mathematics.