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GR.5.1

3D Pythagoras and trigonometry

Use Pythagoras theorem and trigonometry to solve problems in 3D

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

3D Trigonometry and Pythagoras - GCSE Higher Maths

1st Class Maths 284K views

Six clearly worked examples take you through 3D Pythagoras and trig on the Higher paper.

Jump to 1:08Exploring right angled triangles 2:24Example 1 3:18Example 2 4:08Example 3 5:35Example 4 8:03Example 5

Grade 6–9 Core 🇬🇧 UK

3d Pythagoras and 3d Trigonometry

Maths Genie 206K views

A thorough Maths Genie walkthrough of 3D Pythagoras and trigonometry with plenty of examples.

Grade 7–9 Core 🇬🇧 UK

3D Trigonometry

corbettmaths 256K views

Corbettmaths works a typical 3D trigonometry question, finding an angle inside a cuboid.