arc tangent


noun Trigonometry.

the angle, measured in radians, that has a tangent equal to a given number. Abbreviation: arc tan; Symbol: tan−1

Origin of arc tangent

First recorded in 1905–10
Also called inverse tangent.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for arc tangent

arc tangent


The inverse of the tangent function.
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