The Cosine Rule WORKSHEET
GCSE Tier: Higher
Targeting grades: 6-7
Prerequisite knowledge: 2D shapes, angles, rearranging formulae, using a calculator.
The Cosine Rule WORKSHEET DESCRIPTION
This worksheet provides some purposeful practice for finding the missing angles and lengths of triangles using the cosine rule.
Section A has three questions where a missing side is required when given the other two sides and the included angle.
Section B requires learners to calculate an angle given all three sides.
Section C has a mixed set of questions, and section D requires missing values from compound shapes.
