2. (noun) tangent (trigonometry).
Ko te pātata he ōwehenga o tētahi tapatoru hāngai e hono ana i tētahi koki ki tōna tapa pātata me tōna tapa tauaro (TRP 2010:202). / A tangent is a ratio which connects an angle of a right-angled triangle with its adjacent side and its opposite side.