Law of Sines - Mathematics & Logic - Pure Mathematics Dictionary Definition A relation in any (nondegenerate) Euclidean triangle that equates each side length to twice the circumradius times the sine of its opposite angle, usually expressed as a/sin A = b/sin B = c/sin C (and equal to 2R).
Law of Sines - Mathematics & Logic - Pure Mathematics Dictionary Definition A relation in any (nondegenerate) Euclidean triangle that equates each side length to twice the circumradius times the sine of its opposite angle, usually expressed as a/sin A = b/sin B = c/sin C (and equal to 2R).