A source of inequalities for circular functions
In this work, a basic theorem is established and it is found to be a source of inequalities for circular functions, such as Cusas, Huygens, Wilkers, the SandorBencze, Carlsons, the ShaferFink inequality, and the one in the problem of Oppenheim. Furthermore, these inequalities described above will be extended by this basic theorem.
circular functions basic inequalities cusa type inequality huygens type inequality wilker type inequality sandorbencze type inequality carlson type inequality shaferfink type inequality oppenheims problem