How do you calculate the co-terminal of a radian?

. If the initial angle is given in the form or radians, add or subtract 2π instead of 360°. Adding 2π to the original angle yields the positive coterminal angle. By subtracting 2π from the original angle, the negative coterminal angle has been found.

How many people are we starting with? i will answer it's just i need to divide 8 by the total amount of people to get how many tables