Syifa, A.Q. and Kurniawati, I. 2025. Student Error in Grade X on the Concept of Trigonometry Using a Hermeneutic Phenomenological Study. Jurnal Pendidikan Matematika. 16, 2 (Jul. 2025), 182–196. DOI:https://doi.org/10.36709/jpm.v16i2.333.