tan·gent
noun: tangent; plural noun: tangents
1. a straight line or plane that touches a curve or curved surface at a point, but if extended does not cross it at that point.
2. a completely different line of thought or action.
"he quickly went off on a tangent about wrestling"
3. MATHEMATICS the trigonometric function that is equal to the ratio of the sides (other than the hypotenuse) opposite and adjacent to an angle in a right triangle.
adjective: tangent
(of a line or plane) touching, but not intersecting, a curve or curved surface.
"this curve is tangent to the average cost curve"
ITS TOUCHING
