Definitions for

**"Radian"****Related Terms:**Central angle, Steradian, Solid angle, Semicircle, Inscribed angle, Tangent plane, Degree, Right angle, Degrees, Diameter, Obtuse angle, Cosine, Secant, Spherical triangle, Acute angle, Tangent to a circle, Sine, Straight angle, Angle, Radius, Circle, Supplementary angles, Sector, Arc, Subtend, Trigonometric functions, Angular, Orthogonal, Protractor, Cone , Tilt angle, Angle bisector, Parabola , Cyclic quadrilateral, Cotangent, Angle, Angular size, Orthogonality, Vertical angles, Arc minute, Obtuse triangle, Angularity, Circumference, Acute triangle, Acute, Dihedral angle, Rectangular, Elevation angle, Concentric circles

An arc of a circle which is equal to the radius, or the angle measured by such an arc.

A unit for measuring angles; also called a â€œrad.â€ rad = 360Âº.

In angle measure, 2*Pi of a revolution.

A unit of angular measurement equal to the angle at the center of a circle subtended by an arc equal in length to the radius. There are 2 pi radians in a circle.

Unit of angular measurement equal to the angle at the center of a circle subtended by an arc equal in length to the radius. One radian equals about 57.296 degrees. Useful for figuring out the pixel resolutions of spacecraft images. Multiply a camera's angular resolution in radians by its distance from a target and you get the width of one pixel, the pixel scale.

The angle subtended by an arc of a circle equal in length to the radius of the circle: 57.3

An arc of a circle equal in length to the radius; or the angle at the center measured by the arc.

The unit of angular measure, defined as the ratio of a length of arc intercepted by two radii to the length of the radius. P radians = 180°.

Equal to the central angle subtended by an arc of unit length at the centre of a circle of unit radius.

An angular unit defined by the circular angle whose radius is equal to the subtended circular arc. Abbreviated rad. A radian is 57.2958 degrees. Compare degree.

The natural unit of measure of the angle between two intersecting half-lines on the angles from one half-line to another intersecting half-line. It is the angle subtended by an arc of a circle equal in length to the radius of the circle. As the circumference of a circle is equal to 2Ï€ times its radius, the number of radians in an angle of 360Â° or in a complete turn is 2Ï€.

A unit of angular measurement. There are 2p radians in a circle. Therefore 1 radian = 57.3 degrees. Range: The distance from the front bumper of the following vehicle to the rear bumper of the lead vehicle. For this report, this is the distance from the SV to the slow lead vehicle in the same lane or to the closest forward vehicle in the destination lane, or the distance from the front bumper of the closest rear vehicle in the adjacent lane to the rear bumper of the SV, along a longitudinal axis through either of the vehicles.

(rad) Compare with steradian. An angle with vertex at the center of a circle of radius r that encompasses an arc of length r.

The supplementary SI unit of angular measure, defined as the central angle of a circle whose subtended arc is equal to the radius of the circle. One radian is approximately 57o. There are two pi radians in a circle.

the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)

a measurement of angle based upon a fundamental property of circles

a measurement used to describe angles

a measure of an angle, just like degrees

an angle and the corresponding arc on the surface of the Earth is equal to the Earth radius

an angle subtended at the center of a circle by an arc whose length is equal to the radius

an angle subtended by an arc whose length equals one radius

an angle that arises naturally from the geometry of a circle

a specific angular measurement based on the transcendental number pi

a unit used to measure angles and rotations

(trig) A unit of measure for angles; one radian is the angle subtended by an arc that has a curved length equal to the radius of the arc.

Standard unit of angle: the angle at which the arc of circle has the same length as the radius.

Arc subtended at the center of a circle equal to the radius of the circle, there being 2 (PI) radians in a circle.

The size of the central angle of a circle when the arc length equals the radius.

the ratio of the arc length on a circle to the radius of the circle

A measurement of angle. There are 2 r radians in a full circle of 360 angular degrees.

a unit of angle measure defined as the measure of an angle whose intercepted arc is equal to the radius of the circle when the angle's vertex is positioned at the center of the circle. Consequently, 2Ï€ radians = 360Â° and thus one radian is 180/Ï€ degrees or approx. 57.3Â°. The unit of radians is most typically used in trigonometry and frequently the unit is omitted such that the value of the angle's measure is, by convention, merely understood to be radians ( i.e., in the absence of any other indicated unit such as degrees, minutes, and/or seconds)...

The radian is the SI supplementary unit of angle. It is defined as the angle subtended at the center of a circle by an arc of circumference equal in length to the radius of the circle.

A radian is a unit of angular measure that is equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle. A radian is about 57.2957° (1 degree = 0.0174532 radians). There are 2*pi radians in 360°.

An arc in a circle equal to the radius in length. [An angle of 57.3 degrees at the center or a circle, formed by 2 radii cutting off such as arc -- thus 1 radian = 57.3 degrees

A section of a circle (arc) equal in length to the radius. Partial circles drawn with the BASIC CIRCLE command are specified in radians.

A radian is a unit of angular measure equal to the angle subtended at the center of a circle by an arc of length equal to the radius of the circle equal to approximately 57 degrees, 17 minutes, 44.6 seconds.

A unit of angular measure equal to 1/(2) of a complete revolution.

A unit of angular measurement in which the arc length it cuts out of a circle is equal to the radius of the circle; equal to (180 ÷ ?)°, or approximately 57.3°.

A unit of circular angle, equal to an angle at the center of a circle the arc of which is equal in length to the radius; one radian equals 57.2958 degrees; one degree equals 0.017454 radians.

Mathematics. A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle, approximately 57°17'44.6 Filters. Frequency is measured in radians/second. One cycle (360°) equals 2 pi radians.

A unit of angular measure; one radian is that angle with an intercepted arc on a circle equal in length to the radius of the circle. Thus, Ï€ radians equals 180Â°. See also degree.

A unit of angular measurement. There are 2 time 3.14 (pi) radians in one complete revolution. One radian equals 57.3°.

The radian is the SI unit for angular measure. One radian is equal to the angle at the center of a circle made by a slice of that circle in which the distance around the circumference is equal to the radius of the circle (one arc length). One complete circle equals 2Ï€ radians. For more information, see Radian at the Wikipedia. Radian image courtesy of Wikipedia.

A natural unit of angular measurement equal to 57.29578 degrees of arc. Note that 2pi radians = 360 degrees and 2pi f = angular frequency in radians per second (represented by the Greek letter omega), where f = frequency in Hz.

Radian is an Austrian expe, post-rock, jazz band that sounds like an electronic act.