Handayani, Ucik Fitri, Wildan Hakim, and Anggita Oktaviana Putri. “Analisis Kesalahan Mahasiswa Dalam Pembuktian Identitas Trigonometri”. Journal Focus Action of Research Mathematic (Factor M) 4, no. 2 (June 26, 2022): 27–42. Accessed May 17, 2024. https://jurnalfaktarbiyah.iainkediri.ac.id/index.php/factorm/article/view/361.