Rosyada A, Susanti E, Hiltrimartin C. Comparing Trigonometric Ratios Content in Indonesian and Indian Mathematics Textbooks. EJRPM [Internet]. 2026 Jun. 2 [cited 2026 Jul. 27];9(1). Available from: https://ejournal.iainkerinci.ac.id/index.php/edumatika/article/view/6422