arc·tan·gent noun \(ˌ)ärk-ˈtan-jənt\
: the inverse function of the tangent <if y is the tangent of θ, then θ is the arctangent of y>
First Known Use of ARCTANGENT
Seen & Heard
What made you want to look up arctangent? Please tell us where you read or heard it (including the quote, if possible).