cosines law

Cosines Law.  Let a, b, c be the sides of a triangle and A the angle opposite to a. Then


Remark.  Cosines law is the generalised form of Pythagorean theoremMathworldPlanetmathPlanetmath, which latter concerns only the right triangles.

Title cosines law
Canonical name CosinesLaw
Date of creation 2013-03-22 11:42:35
Last modified on 2013-03-22 11:42:35
Owner drini (3)
Last modified by drini (3)
Numerical id 26
Author drini (3)
Entry type Theorem
Classification msc 51M04
Classification msc 05A15
Classification msc 05A10
Classification msc 05A16
Synonym law of cosines
Related topic SinesLaw
Related topic PythagorasTheorem
Related topic DerivationOfCosinesLaw
Related topic CosinesLaw
Related topic StewartsTheorem
Related topic AlternativeProofOfTheSinesLaw
Related topic SinesLawProof
Related topic ProofOfStewartsTheorem