Practice problem
Circumference and Pi
By Liza Sulkin
Radians are units to measure the sizes of angles. 1 radian is the central angle of an arc whose length is the same as the radius of the circle. How many radians are in a circle?
Practice problem
Radians are units to measure the sizes of angles. 1 radian is the central angle of an arc whose length is the same as the radius of the circle. How many radians are in a circle?