BERNIDO, R. B.; BOYON, C. L. GUIDED INQUIRY-BASED LEARNING OF TRIGONOMETRIC IDENTITIES. PEOPLE: International Journal of Social Sciences, [S. l.], v. 5, n. 3, p. 767–781, 2020. DOI: 10.20319/pijss.2020.53.767781. Disponível em: https://www.grdspublishing.org/index.php/people/article/view/1270. Acesso em: 6 may. 2024.