arc sine

noun Trigonometry.

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

Nearby words

  1. arc light,
  2. arc of lowitz,
  3. arc sec,
  4. arc secant,
  5. arc second,
  6. arc spectrum,
  7. arc tan,
  8. arc tangent,
  9. arc welding,
  10. arc, d'

Origin of arc sine

First recorded in 1905–10

Also called inverse sine. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for arc sine

arc sine

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