IGCSE Maths / Introducing trigonometry

Right-angled trigonometry with bearings revision notes

Edexcel International GCSE Maths (4MA1), chapter 16: Introducing trigonometry, specification point 4.8c-f. Part of the full course.

Watch the video lesson · IGCSE Maths past papers

Bearings are measured clockwise from north at the point you are standing, and are written using three figures. For a trigonometry problem, first find an angle in the right-angled triangle, then convert it to the bearing from north.

More lessons in Introducing trigonometry

• The sine ratio
• The cosine ratio
• The tangent ratio
• Labelling sides and choosing the trig ratio
• Finding a missing side with trigonometry
• Missing side when the unknown is in the denominator
• Finding a missing angle with inverse trig
• Combining Pythagoras and trigonometry
• Two-step right-angled triangle problems
• Angles of elevation and depression