Nurniawati, Devi, Poppy Yaniawati, and Eka Firmansyah. 2026. “The Effectiveness of the Math Expert Application in Improving Students’ Mathematical Reasoning in Trigonometry”. Mosharafa: Jurnal Pendidikan Matematika 15 (1):236-60. https://doi.org/10.31980/mosharafa.v15i1.3607.