a law stating that the square of a side of a plane triangle is equal to the sum of the squares of the other two sides minus twice the product of the other sides multiplied by the cosine of the angle between them.
a law stating that the cosine of an arc of a spherical triangle equals the sum of the product of the cosines of the other two arcs added to the product of the sines of the other two arcs multiplied by the cosine of the angle between them.
noun, Economics. 1. the law that for a single consumer the marginal utility of a commodity diminishes for each additional unit of the commodity consumed.
noun 1. Chemistry. the statement that in a pure compound the elements are always combined in fixed proportions by weight. 2. Logic. the law that either a proposition or its denial must be true.
- Law of dominance
law of dominance See under Mendel’s law.
- Law of effect
noun 1. (psychol) another name for Thorndike’s law See Thorndike