Khofifah, K., Rosyadi, R., Gunadi, F., Nandang, N. and Runisah, R. (2024) “Students’ Difficulties In Solve Trigonometry Problem Solving According To Step Polya’s”, Mathline : Jurnal Matematika dan Pendidikan Matematika, 9(3), pp. 919–946. doi: 10.31943/mathline.v9i3.571.