Radians, Arcs and Sectors Summary

Radians, Arcs and Sectors

Summary

angles can be measured in degrees or radians.

the length of an arc and the area of a sector can be calculated using formulae.

Key Skills
  • change an angle in degrees to radians
  • change an angle in radians to degrees
  • calculate the length of an arc
  • calculate the area of a sector

Vocabulary

radians, arc, gradian, sector, radius, degree.