Tanu Wijaya, Tommy, Zhou Ying, and Aditya Purnama. “Using Hawgent Dynamic Mathematic Software in Teaching Trigonometry”. International Journal of Emerging Technologies in Learning (iJET) 15, no. 10 (June 1, 2020): pp. 215–222. Accessed November 22, 2024. https://online-journals.org/index.php/i-jet/article/view/13099.