noun arc·tan·gent \(ˌ)ärk-ˈtan-jənt\

Definition of ARCTANGENT

:  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

circa 1889


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July 29, 2015
indomitable Hear it
incapable of being subdued or conquered
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