The magic of trigonometry

You might have found it boring in school maths classes, but Matt Parker thinks we should all learn to love trigonometry.

The ‘Love Triangle’ author talks to Tim Harford about the maths used in GPS, architecture and special effects.

Presenter: Tim Harford Producer: Debbie Richford Series Producer: Tom Colls Production Co-ordinator: Brenda Brown Sound Mix: Nigel Appleton Editor: Richard Vadon