Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points. Learn about graphs of trigonometric functions in this National 5 Maths guide.

Sign up for the best picks from our travel, fashion and lifestyle writers. Colin Hegarty opens the front door of his modest Ruislip home to greet me. In his neat ...

A former City worker who took a £40,000 pay cut when he quit to become a teacher is the only Briton on a shortlist for a major international teaching prize. Colin Hegarty, 34, swapped Deloitte’s in ...