# law of cosines

(redirected from*Law of cos*)

## law of cosines

[′lȯ əv ′kō‚sīnz] (mathematics)

Given a triangle with angles

*A, B,*and*C*and sides*a, b, c*opposite these angles respectively:*a*^{2}=*b*^{2}+*c*^{2}- 2*bc*cos*A*.McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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