Explanation:
To find an angle that is coterminal with an angle measuring -720°, we need to add or subtract multiples of 360° until we get an angle between 0° and 360°.
We can start by adding 360° multiple times until we get a positive angle:
-720° + 360° = -360° (still negative) -360° + 360° = 0°
So, -720° is equivalent to an angle of 0° plus a full rotation of 360°.
Since we want an angle that is between 0° and 360°, we can just take a = 0°.
Therefore, an angle that is coterminal with an angle measuring -720° and between 0° and 360° is a = 0°.