The Cosine Rule
Teach Genie
Review The Cosine Rule by teaching Genie
Teach it back in your own words, spot gaps, and remember it better.
Question 1
3 marksA surveyor measures the distances between three markers, AAA, BBB, and CCC, placed on a plot of land. The distance AB AB\,AB is 6.4 m, the distance BC BC\,BC is 5.5 m, and the distance AC AC\,AC is 8.1 m.
Which angle must be known to find a missing side using the Cosine Rule?
The Cosine Rule Revision Guide
Revision notes for Eduqas GCSE Maths The Cosine Rule. Open the guide for explanations and worked examples. Written against the Eduqas GCSE Maths (C300QS) specification, so the content matches what's examinable rather than general Maths background.