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GR.5.5

Problem solving - non-right angled trigonometry (including bearings)

Solve problems in all types of triangle using trigonometry (including bearings)

3 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.

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Grade 6–9 Core 🇬🇧 UK

Sine & Cosine Rules applied to Bearings : ExamSolutions Maths Revision

ExamSolutions 248K views

Applies the sine and cosine rules to solve GCSE bearings problems, step by step.

Grade 7–9 Stretch 🇬🇧 UK

Bearings with Trigonometry | Grade 9 Maths Series | GCSE Maths Tutor

The GCSE Maths Tutor 107K views

In-depth grade 7-9 practice combining bearings with the sine and cosine rules.

Grade 6–9 Core 🇬🇧 UK

The Cosine Rule - GCSE Higher Maths

1st Class Maths 813K views

Clear GCSE Higher walkthrough of the cosine rule for missing sides and angles.

Jump to 0:24Introducing the formula 0:52Example 1 - finding a missing side 2:38Example 2 - finding a missing side 3:52Example 3 - finding a missing angle 6:36Example 4 - finding a missing angle 7:41How to know when to use the sine rule or the cosine rule