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
The inverse of the tangent function.
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