EL-MONGY, S. New Theorem and Formula for Circle Arc Length Calculations with Trigonometric Approach Application in Astrophysics . JOURNAL OF ADVANCES IN PHYSICS, [S. l.], v. 18, p. 158–163, 2020. DOI: 10.24297/jap.v18i.8914. Disponível em: https://www.rajpub.com/index.php/jap/article/view/8914. Acesso em: 17 may. 2024.