A source of inequalities for circular functions

✍ Scribed by Ling Zhu

• Book ID: 104008668
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 441 KB
• Volume: 58
• Category: Article
• ISSN: 0898-1221
• DOI: 10.1016/j.camwa.2009.07.076

✦ Synopsis

In this work, a basic theorem is established and it is found to be a source of inequalities for circular functions, such as Cusa's, Huygens', Wilker's, the Sandor-Bencze, Carlson's, the Shafer-Fink inequality, and the one in the problem of Oppenheim. Furthermore, these inequalities described above will be extended by this basic theorem.