This key facts covers Key Facts within 3D Trigonometry for GCSE Mathematics. Revise 3D Trigonometry in Geometry & Measures for GCSE Mathematics with 12 exam-style questions and 2 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 2 of 6 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 6
Practice
12 questions
Recall
2 flashcards
Key Facts
| Key Concept | What to Do |
|---|---|
| Space diagonal | Use Pythagoras twice: first on base, then on vertical triangle |
| Angle with base | Draw triangle with: height = opposite, base diagonal = adjacent |
| 3D Pythagoras | d² = x² + y² + z² (for space diagonal) |
Keep building this topic
Read this section alongside the surrounding pages in 3D Trigonometry. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for 3D Trigonometry
To find the angle between a line and a horizontal plane in a 3D problem, which technique is typically used?
Describe the general method for finding the angle between a line and a plane in a 3D problem.
Quick Recall Flashcards
12 questions on 3D Trigonometry — practise free
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