arc cosine
noun
Trigonometry.
the angle, measured in radians, that has a cosine equal to a given number. Abbreviation: arc cos; Symbol: cos−1
Also called
inverse cosine.
Origin of arc cosine
First recorded in 1905–10
Words nearby arc cosine
arbuthnot,
arbutus,
arc,
arc cos,
arc cosecant,
arc cosine,
arc cot,
arc cotangent,
arc csc,
arc de triomphe,
arc furnace
Scientific definitions for arc cosine
arc cosine
The inverse of the cosine function.