(jìng) - radian — a unit of plane angle measurement

Tone 4

jìng | 8 strokes | radical: 弓

· jìng

radian — a unit of plane angle measurement in mathematics, equal to the angle at the center of a circle subtended by an arc equal in length to the radius.

radian — a unit of plane angle measurement

Usage highlights

radianradian measureradian systemradian angleradian per second

Synonyms

Usage & contexts

Examples

  • One radian (一弪) is approximately 57.3 degrees.
  • The angle is measured in radians (弪度).
  • Convert degrees to radians (将度转换为弪).

Collocations

  • radian()
  • radian measure(弪度)
  • radian system(弪制)
  • radian angle(弪角)
  • radian per second(弪/秒)

Cultural background

FAQ
  • A modern character created specifically for mathematical terminology.
  • Reflects the standardization of scientific vocabulary in modern Chinese.

FAQ