NURNIAWATI, Devi; YANIAWATI, Poppy; FIRMANSYAH, Eka. The Effectiveness of the Math Expert Application in Improving Students’ Mathematical Reasoning in Trigonometry. Mosharafa: Jurnal Pendidikan Matematika, [S. l.], v. 15, n. 1, p. 236–260, 2026. DOI: 10.31980/mosharafa.v15i1.3607. Disponível em: https://journal.institutpendidikan.ac.id/index.php/mosharafa/article/view/3607. Acesso em: 28 apr. 2026.