A trigonometric double-inequality
Horst Alzer
Waldbröl, Germany
Cite this article
Horst Alzer, A trigonometric double-inequality. Elem. Math. 65 (2010), no. 2, pp. 45–48
DOI 10.4171/EM/139Horst Alzer, A trigonometric double-inequality. Elem. Math. 65 (2010), no. 2, pp. 45–48
DOI 10.4171/EM/139