Dictionary.com
definitions
  • synonyms

law of sines

noun Trigonometry.
  1. 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.
  2. 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.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018