Tangent Angle of Circular Arc is the angle subtended by the tangents drawn at the end points of a Circular Arc. And is denoted by ∠Tangent. Tangent Angle of Circular Arc is usually measured using the Degree for Angle. Note that the value of Tangent Angle of Circular Arc is always positive. Typically, the value of Tangent Angle of Circular Arc lies in the range from 0 to 360.