Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Modern Latin
Origin: trigonometria, from Greek trigonon 'triangle' + -metria 'measuring'

trigonometry

 noun
     
Related topics: Maths
trig‧o‧nom‧e‧try [uncountable]
HM the part of mathematics concerned with the relationship between the angles and sides of triangles
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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