the angle, measured in radians, that has a tangent equal to a given number. Abbreviation: arc tan; Symbol: tan−1
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Also called inverse tangent.
Origin of arc tangent
First recorded in 1905–10
Words nearby arc tangent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for arc tangent
The inverse of the tangent function.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.