Examining the application of trigonometry in different sciences

The application of calculation rules has a major contribution in coordinating proportions and architectural elements. The science of geometry and its application is one of the main features of Iranian architecture, and its development in Iranian architecture began in the ۸th and ۹th centuries and continued until the ۱۰th century. What is considered in terms of trigonometric studies of the architectural elements of Iran in the Timurid era is to use the viewpoint of the mathematician and thinker of the ۹th century, Ghiyasuddin Jamshid Kashani, in measuring, calculating and regularizing these elements. One of Ghiyathuddin's achievements is the trinity of angle and circle, which complements Khayyam's trigonometry and conic sections. The purpose of this research is to answer the question of what applications trigonometry has in different sciences and how muchit has contributed to the progress of various industries such as architecture, astronomy and other sciences.