A degree (in complete, a degree of arc, arc degree, or arcdegree), typically denoted by ° (the degree symbol ), is a measurement of a plane angle , defined so that a complete rotation is 360 degrees. It is not an SI unit , as the SI unit of angular measure is the radian , but it is described in the SI brochure as an accepted unit 4 Simply because a full rotation equals 2π radians, one particular degree is equivalent to π/180 radians. A lot of individuals feel of a degree in human services as applying only to jobs with-in the realm of social operate such as counselors, caseworkers or advocates. The original motivation for picking out the degree as a unit of rotations and angles is unknown.