arc cosine

  1. the angle, measured in radians, that has a cosine equal to a given number. Abbreviation: arc cos; Symbol: cos−1

Origin of arc cosine

First recorded in 1905–10
  • Also called inverse cosine .

Words Nearby arc cosine Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Scientific definitions for arc cosine

arc cosine

  1. The inverse of the cosine function.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.