Volume 15, Issue 2 József Sándor Two sharp inequalities for trigonometric and hyperbolic functions Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors József Sándor Find more articles with the same keywords inequalities trigonometric functions hyperbolic functions means and their inequalities Find more articles with the same subject classes 26D05 26D07 26D99