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arc tangent

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noun Trigonometry.

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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Scientific definitions for arc tangent

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.
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