National 5 Using the sine and cosine rules to find a side or angle in a triangle The sine rule The sine rule can be used to find an angle from 3 sides and an angle, or a side from 3 angles and a side.

Revise using the sine and cosine rules to find a side or angle in a triangle for your National 5 maths exam with Bitesize Scotland interactive practice quizzes covering feedback and common errors.