Tangents

A tangent is a special type of line that touches a circle or a curve at only one point and does not intersect with it. Tangents are used in geometry and trigonometry to measure an angle, calculate the area bounded by a circle, and solve equations involving circles. In engineering, tangents are used when designing machines, bridges, and other structures. In physics, tangents are used to calculate the speed of objects in a circular motion. In astronomy, tangents are used to determine the distance between two celestial bodies. Tangents are also used to measure the length or height of an object.