sinenoun [ C ]
uk/saɪn/us/saɪn/written abbreviation sin specialized(in a triangle that has one angle of 90°) the ratio of the length of the side opposite an angle less than 90° divided by the length of the hypotenuse (= the side opposite the 90° angle)
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cosine
tangent
Thesaurus: synonyms and related words
Geometry: describing angles, lines & orientations
- alternate angle
- angle of incidence
- antinode
- asymptote
- asymptotic
- axial
- erect
- horizontal
- oblique
- parallel
- plumb
- prominent
- reflection
- right angle
- secant
- slant
- supplementary angle
- tangent
- tangential
- transversal
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