law of sines
Americannoun
Trigonometry.
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a law stating that the ratio of a side of a plane triangle to the sine of the opposite angle is the same for all three sides.
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a law stating that the ratio of the sine of an arc of a spherical triangle to the sine of the opposite angle is the same for all three arcs.
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
