Circular segment calculator is a math calculator that calculate arc length, height, chord, radius, angle and area by given input angle & radius or chord & height.

Features:
- Result are Calculate on the fly after input
- All results are copy-able
- Input are guide by reference image above
- All formula are included

Circular segment - is an area of a circle which is "cut off" from the rest of the circle by a secant (chord).

A circular sector or circle sector, is the portion of a disk enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector. In the diagram, θ is the central angle in radians, r the radius of the circle, and L is the arc length of the minor sector.

A sector with the central angle of 180° is called a half-disk and is bounded by a diameter and a semicircle. Sectors with other central angles are sometimes given special names, these include quadrants (90°), sextants (60°) and octants (45°), which come from the sector being one 4th or 6th or 8th part of a full circle, respectively.

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.

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