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Trigonometry is a branch of mathematics dealing with relationships between angles and the lengths of the corresponding sides of triangles. It forms the theoretical basis for various practical applications, including astronomy, physics, engineering, and computer graphics. As a key component of mathematical analysis, it enables the precise calculation of quantities and the understanding of periodic phenomena in nature and technology. In this hierarchy, trigonometry complements the broader fields of science and space science by offering essential mathematical tools for understanding and describing spatial relationships and patterns.