Reza HSF, Amelia Defrianti Putri, Dhanachat Anuniwat. Realistic Mathematics Education Improves Trigonometric Ratios: A Classroom Action Research Study. supremum j of mathematics education [Internet]. 2026 Jan. 26 [cited 2026 Feb. 23];10(1):55-67. Available from: https://fkipunsika.id/index.php/supremum/article/view/13148