Pythagorean triples like 3,4,5 have been a fascination for thousands of years. Now for the first time a simple elegant system, based on these triples, has been developed which reveals unexpected applications in many areas of pure and applied mathematics.These include general applications is trigonometry, coordinate geometry (in 2 and 3 dimensions), transformations (in 2 and 3 dimensions), simple harmonic motions, projectile motion, astronomy etc.The easy triple method links these areas and replaces large numbers of apparently unconnected formulae with a single device.This book fully explains the various applications and most of it should be accessible to anyone with the basic understanding of mathematics which a school leaver should have.