Bayu, Cindivia Putri, Dian Devita Yohanie, and Aprilia Dwi Handayani. 2021. “Analysis of Student Errors in Solving Comparative Trigonometry Problems of Right-Angled Triangles Based on watson’s Criteria”. Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah Di Bidang Pendidikan Matematika 7 (2):161-71. https://doi.org/10.29407/jmen.v7i2.16247.