Английский разговорный словарь (основной) - trigonometry
Trigonometry
trigonometry
ˌtrɪɡəˈnɔmɪtrɪ n. thebranch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles. øøtrigonometric adj. trigonometrical adj. [mod.L trigonometria (as TRIGON, -METRY)]