Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 8)
In the context of finding lengths and angles in 3 dimensions, which method is primarily used?
Area calculations
Pythagoras' theorem in right-angled triangles
The Law of Sines
The Law of Cosines
Explicació
Finding lengths and angles in 3 dimensions primarily involves identifying right-angled triangles and using Pythagoras' theorem.