About this document

Understanding the Cosine Rule by Jennifer Elliott is a document available to read on EtoBox.

This document introduces the Sine Rule and Cosine Rule for solving problems involving unknown sides and angles of triangles. The Sine Rule can be used when a side and its opposite angle are known, while the Cosine Rule relates all three sides to one angle. Examples are provided for using each rule to find missing sides or angles. Practice questions are included to test understanding.

Author

Jennifer Elliott

Language

EN