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reduction formula

British  

noun

  1. maths a formula, such as sin (90° ± A ) = cos A , expressing the values of a trigonometric function of any angle greater than 90° in terms of a function of an acute angle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Apply a reduction formula to evaluate ∫ sec3 x dx.

From Textbooks • Mar. 30, 2016

The last reduction formula is derived by writing tangent in terms of sine and cosine:

From Textbooks • Feb. 13, 2015

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.