arc cosine
nounTrigonometry.
the angle, measured in radians, that has a cosine equal to a given number. Abbreviation: arc cos; Symbol: cos−1
Origin of arc cosine
1First recorded in 1905–10
- Also called inverse cosine .
Words Nearby arc cosine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Scientific definitions for arc cosine
arc cosine
The inverse of the cosine function.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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