trigonometry

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trig·o·nom·e·try / ˌtrigəˈnämitrē/ • n. the branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.DERIVATIVES: trig·o·no·met·ric / -nəˈmetrik/ adj.trig·o·no·met·ri·cal / -nəˈmetrikəl/ adj.

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