Journal of the Indonesian Mathematical Society
Vol. 31 No. 4 (2025): DECEMBER

Jacobsthal Trigonometric Functions

Pakapongpun, Apisit (Unknown)
Chailangka, Natdanai (Unknown)



Article Info

Publish Date
12 Nov 2025

Abstract

Jacobsthal numbers satisfy a second order homogeneous recurrence relation $J_{n}=J_{n-1}+2J_{n-2}$ where $J_{n}$ denotes the $n^{th}$ Jacobsthal number. In this paper, the Jacobsthal sine, cosine, tangent and cotangent are defined, and some identities of Jacobsthal trigonometric functions are provided.

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Journal Info

Abbrev

JIMS

Publisher

Subject

Mathematics

Description

Journal of the Indonesian Mathematical Society disseminates new research results in all areas of mathematics and their applications. Besides research articles, the journal also receives survey papers that stimulate research in mathematics and their ...