versed sine

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Related to versed sines: Coversed sine, versed cosine

versed sine

n. Abbr. vers
A trigonometric function of an angle equal to one minus the cosine of that angle. Also called versine.

[Translation of New Latin sinus versus : sinus, sine + Latin versus, past participle of vertere, to turn.]

versed sine

or

versine

n
(Mathematics) a trigonometric function equal to one minus the cosine of the specified angle. Abbreviation: vers
[C16: from New Latin sinus versus, from sine1 + versus turned, from vertere to turn]
Translations
seno verso
versini