arctangent
noun
arc·tan·gent
| \ (ˌ)ärk-ˈtan-jənt
\
\
variants:
or less commonly arc tangent
plural arctangents
also arc tangents
Definition of arctangent
: the inverse function of the tangent
if y is the tangent of θ, then θ is the arctangent of y
—abbreviation arctan
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