EntityQ1760468· pop 18· linked from 62 articlessmall-angle approximationSign in to saveSimplification of the basic trigonometric functionsConnectionslist of trigonometric identitiesEntityphysicsEntityastronomyEntitycomputer scienceEntityengineeringEntityInternational Standard Book NumberEntitycircleEntityangleEntityfrequencyEntityopticsEntityelectromagnetismEntitymechanicsEntitydifferential equationEntitydigital object identifierEntitycartographyEntitypotential energyEntityparsecEntityradianEntitytrigonometric functionEntitypendulumEntityCategoriesEquations of astronomyTrigonometry