A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of angle, representing 1/360 of a full rotation. it’s not associate SI unit, because the SI unit for angles is rad, but it is mentioned within the SI pamphlet as associate accepted unit. as a result of a full rotation equals 2p radians, one degree is admire p/180 radians.
The original motivation for selecting the degree as a unit of rotations and angles is unknown. One theory states that it’s related to the very fact that 360 is close to the quantity of days in an exceedingly year. Ancient astronomers noticed that the sun, which follows through the great circle path over the course of the year, appears to advance in its path by close to one degree each day. Some ancient calendars, like the Persian calendar, used 360 days for a year. the utilization of a calendar with 360 days could also be associated with the utilization of common fraction numbers. {one of|one among|one in an exceedinglyll|one amongst|one in every of} the earliest recorded use of 360 because the total days in a year is found within the Hebrew Bible, Genesis 8–9 because it describes the period of the nice Flood over twelve months of 30 days every.
The term degree is employed in many scales of temperature. The image ° is typically used, followed by the initial letter of the unit, for instance “°C” for degree(s) uranologist. A degree will be outlined as a group amendment in temperature measured against a given scale, for instance, one degree Centigrade is one hundredth of the activity between the purpose at that water starts to alter state from Solid to liquid state and also the purpose at that it starts to alter from its aeriform state to liquid.
The “degree Kelvin” (°K) could be a former name for the SI unit of temperature on the physical science (absolute) ordered series. Since 1967 it’s been familiar merely because the kelvin, with image K (without a degree symbol). Degree absolute (°A) is obsolete word, typically referring specifically to the kelvin however typically the degree Rankine moreover.
In graph theory, the degree (or valency) of a vertex of a graph is that the variety of edges incident to the vertex, with loops counted doubly. The degree of a vertex v is denoted \deg(v). the utmost degree of a graph G, denoted by ?(G), and the minimum degree of a graph, denoted by d(G), area unit the utmost and minimum degree of its vertices. within the graph on the correct, the maximum degree is 5 and also the minimum degree is zero. in an exceedingly regular graph, all degrees area unit identical, so we will speak of the degree of the graph.
