Sin, Cos and Tan | gcse-maths-revision, trigonometry, sin-cos-and-tan | MathsRevision.net GCSE Maths revision looking at Sin, Cos and Tan within the field of trigonometry ... A right-angled triangle is a triangle in which one of the angles is a right-angle. The hypotenuse of a right angled triangle is the longest side, which is the one opposit
