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Trigonometry
/ˌtrɪɡ.əˈnɒm.ɪ.tri/
THEORY & MATHEMATICSintermediate
Definition
The branch of mathematics dealing with the relationships between angles and sides of triangles. In architecture, trigonometry is used to calculate roof pitches, set out sloped ground, determine sight lines, and resolve the geometry of complex structural systems.
Example
An architect designing a staircase must use trigonometry to ensure the string angle, riser height, and going all comply with building regulations within the constraints of the floor-to-floor height.