SHOLAHUDIN, Usep; OKTAVIYANTHI, Rina; LUTFIAH, Niswa Nagina; RAMAHI, Refa Jamal. Mapping cognitive transitions in extended-angle trigonometry: A mixed-methods PCA analysis of university students’ representational thinking . Journal of Honai Math, [S. l.], v. 9, n. 1, p. 119–140, 2026. DOI: 10.30862/jhm.v9i1.1122. Disponível em: https://journalfkipunipa.org/index.php/jhm/article/view/1122. Acesso em: 23 oct. 2026.