Mathematical Inequalities & Applications · Volume 19, Issue 3 On Jordan's, Redheffer's and Wilker's inequality 19-60 Pages 823-839 DOI 10.7153/mia-19-60 Downloads Short PDF Full PDF PNG Authors Barkat Ali Bhayo József Sándor Keywords trigonometric and hyperbolic functions Jordan's inequality Cusa-Huygens inequality Redheffer's inequality Wilker's inequality Becker-Stark inequality Subject classes 26D05 26D07 26D99