Portion of a disk enclosed by two radii and an arc
Not to be confused with circular section.
A circular sector, also known as circle sector or disk sector or simply a sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle) enclosed by two radii and an arc, with the smaller area being known as the minor sector and the larger being the major sector.[1] In the diagram, θ is the central angle, the radius of the circle, and is the arc length of the minor sector.
The angle formed by connecting the endpoints of the arc to any point on the circumference that is not in the sector is equal to half the central angle.[2]
^Dewan, Rajesh K. (2016). Saraswati Mathematics. New Delhi: New Saraswati House India Pvt Ltd. p. 234. ISBN 978-8173358371.
^Achatz, Thomas; Anderson, John G. (2005). Technical shop mathematics. Kathleen McKenzie (3rd ed.). New York: Industrial Press. p. 376. ISBN 978-0831130862. OCLC 56559272.
A circularsector, also known as circle sector or disk sector or simply a sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle)...
a circular flow. The four-sector model adds the foreign sector to the three-sector model. (The foreign sector is also known as the "external sector,"...
{\displaystyle s={\theta }R} The area a of the circular segment is equal to the area of the circularsector minus the area of the triangular portion (using...
tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line...
A circular arc is the arc of a circle between a pair of distinct points. If the two points are not directly opposite each other, one of these arcs, the...
{\sqrt {2}}}, analogous to the magnitude of a circular angle corresponding to the area of a circularsector in a circle with radius 2{\displaystyle {\sqrt...
Look up sector in Wiktionary, the free dictionary. Sector may refer to: Sector, West Virginia, U.S. Circularsector, the portion of a disc enclosed by...
beyond the circular functions. Both types depend on an argument, either circular angle or hyperbolic angle. Since the area of a circularsector with radius...
separated. Circularsector — the analogous 2D figure. Spherical cap Spherical segment Spherical wedge Weisstein, Eric W. "Spherical sector". MathWorld...
Quadrant (circle), a circularsector equal to one-quarter of a circle, or half a semicircle Quadrant (plane geometry), a sector of a two-dimensional Cartesian...
from transportation), can be reduced by implementing circular economy strategies in five sectors: cement, aluminum, steel, plastics, and food. Cement...
or twice the area of the corresponding circularsector. Alternately hyperbolic angle is the area of a sector of the hyperbola x y = 1. {\displaystyle...
based on a Rub el Hizb, albeit with circularsectors added to meet office space requirements. The circularsectors are similar to the bottom part of the...
centroids Second polar moment of area "Circle". eFunda. Retrieved 2006-12-30. "Circular Half". eFunda. Retrieved 2006-12-30. "Quarter Circle". eFunda. Retrieved...
hyperbolic sector and a circularsector since the areas of these sectors correspond to the angle magnitudes in each case. Unlike the circular angle, the hyperbolic...
must land in the throwing sector, which is a circularsector of 34.92° centered on the throwing circle. The throwing sector has been narrowed multiple...
grazing a circular area: the interior grazing problem and the exterior grazing problem. The former involves grazing the interior of a circular area, and...
of a circularsector to the area of a hyperbolic sector, via a common stereographic projection. If twice the area of the blue hyperbolic sector is ψ,...
a 28.96º circularsector that is centered on the center point of the throwing arc. The angle of the throwing sector (28.96º) provides sector boundaries...
function relates a hyperbolic angle measure ψ {\textstyle \psi } to a circular angle measure ϕ {\textstyle \phi } called the gudermannian of ψ {\textstyle...
Circular fashion is an application of circular economy to the fashion industry, where the life cycles of fashion products are extended. The aim is to create...
before releasing the discus. The discus must land within a 34.92º circularsector that is centered on the throwing circle. The rules of competition for...
Orthogonal Polar coordinate system Pole Real axis Secant line CIrcularsector or "sector" Semiperimeter Symmetry Shape Pattern Crystal system Frieze group...
partition the circle into sectors, as shown in the figure to the right. Each sector is approximately triangular in shape, and the sectors can be rearranged to...
first quadrant. In the diagram, let R1 be the triangle OAB, R2 the circularsector OAB, and R3 the triangle OAC. The area of triangle OAB is: A r e a...
of any regular polygon, computation of the area of any polygon or circularsector, and a variety of other calculations. Under Galileo's direction, instrument...