arc sine

noun Trigonometry.
  1. the angle, measured in radians, that has a sine equal to a given number. Abbreviation: arc sin, arcsin; Symbol: sin−1

Origin of arc sine

First recorded in 1905–10
Also called inverse sine. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

arc sine in Science

arc sine

  1. The inverse of the sine function.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.