arc sine

arc sine

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


Origin:
1905–10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Arc sine is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
the offspring of a zebra and a donkey.
American Heritage
Science Dictionary
arc sine  
The inverse of the sine function.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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