The radian, denoted by the symbol rad, is the unit of angle in the International System of Units (SI) and is the standard unit of angular measure used in ... Gradian · Steradian · Milliradian

Радиа́н (русское обозначение: рад, международное: rad; от лат. radius — луч, радиус) — центральный угол, соответствующий дуге окружности, длина которой равна ...

геометр. единица измерения углов, равная углу, соответствующему дуге, длина которой равна радиусу окружности ◇ Если мы возьмём угол PCO так, ...

A radian is an angle measurement on a circle, though, instead of using degrees, the length of the circle's radius is used to measure angles.

There are two different systems for measuring angles: degrees and radians. To measure in degrees, we first consider a full revolution as 36 0 ∘ 360^\circ ...

(geometry) In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference ...

A radian is a unit of measurement for angles. In a circle, the measure of a central angle in radians is the ratio of the length of the intercepted arc to ...

In trigonometry, the radian is a form of angular measurement. One radian is the angle subtended at the center of a circle by an arc that is equal in length ...

РАДИАН — (от латинского radius спица колеса), угол, соответствующий дуге, длина которой равна радиусу окружности. Радиан принимается за единицу измерения углов.

The Radian Measure 5.1 What You need to Know 5.1.1 Defining a radian 5.1.2 Measuring an angle in radians 6 Converting between Radians and Degrees 7 Exercises