
sine rule


Also called the law of sines. It states that the ratio of the length of a side to the sine of the angle opposite that side is the same for all three sides in any triangle. Using a formula, the sine rule can be written as
a / sinA = b / sinB = c / sinC in which a, b, and c are the three sides and A, B, and C are the three angles opposite a, b, and c.

