SETIAWAN, Y. E. S.; SUNARDI. Classification of errors in determining trigonometry function values at standard positions. JRAMathEdu (Journal of Research and Advances in Mathematics Education), [S. l.], v. 8, n. 2, 2023. DOI: 10.23917/jramathedu.v8i2.1625. Disponível em: https://journals2.ums.ac.id/index.php/jramathedu/article/view/1625. Acesso em: 22 jul. 2024.