See Yan WONG (2026) “Rethinking the Pedagogical Sequence of Trigonometric Formulae in Secondary Education : A Preliminary Assessment of an Alternative Teaching Approach in a Hong Kong Secondary ”, INTERNATIONAL JOURNAL OF MANAGEMENT RESEARCH AND REVIEW, 16(3), pp. 204–306. Available at: https://ijmrr.com/index.php/ijmrr/article/view/759 (Accessed: 23 October 2026).