3D Pythagoras & Trigonometry

Extend Pythagoras and SOHCAHTOA into three dimensions to find lengths and angles in 3D shapes.

3D Pythagoras

Find lengths of diagonals inside 3D shapes such as cuboids by applying Pythagoras' theorem in two stages.
3D Trigonometry

Find angles of elevation and depression, and angles between lines and planes in 3D shapes using SOHCAHTOA.