Find an angle between 0 and 2π that is coterminal with −7π

Answer 1

One time around the entire circle is 2π radians. That means halfway around the circle is π radians. So can you see that 7π is 3.5 times around the circle? And going in a negative direction means clockwise. So 7π would look like this:

Can you also see that you could get to the same place if you went counterclockwise halfway around the circle? That would be π.