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arc secant

noun, Trigonometry.
the angle, measured in radians, that has a secant equal to a given number. Symbol: sec −1.
Abbreviation: arc sec;
Also called inverse secant.
Origin of arc secant
First recorded in 1905-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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arc secant in Science
arc secant  
The inverse of the secant function.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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