The Cosine Rule WORKSHEET
Suitable for Year groups: Year 10, Year 11
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.
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Frequently Asked Questions
This sine and cosine rules worksheet is designed for students in Year 10 and Year 11 and aligns with the UK National Curriculum.