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Dictionary

trig•o•nom•e•try

Pronunciation: (trig"u-nom'i-trē), [key]
—n.
the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the calculations based on them.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

trigonometric series

trigonous

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