Trigonometry. the angle, measured in radians, that has a cosine equal to a given number. Abbreviation: arc cos; Symbol: cos−1
What’s The Area Between Your Eyebrows Called?People rarely take the time to notice, much less appreciate, their bodies. What vastly under-recognized parts of the body are there?
Origin of arc cosine
First recorded in 1905–10
Also called inverse cosine.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for 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.