Definition:Cosecant/Linguistic Note
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Linguistic Note on Cosecant
Like secant, the word cosecant comes from the Latin secantus: that which is cutting, the present participle of secare: to cut.
The co- prefix, as with similar trigonometric functions, is a reference to complementary angle: see Cosecant of Complement equals Secant.
It is pronounced with an equal emphasis on both the first and second syllables: co-see-kant.