Convert each of these radian measures into degrees. To see the answer, pass your mouse over the colored area. It is usual, though, to omit the word radians. When changing degrees into radians, or vice-versa, we typically can combine angles we know to form angles we do not know. Change each of the following into radians.
Angles are coterminal if they have the same terminal side.
They have the same terminal side. If we go around in the negative direction, we can make a similar observation.