Final answer:
To convert -4 radians to degrees, multiply by the conversion factor 1 radian = 57.3°. The equivalent angle less than 360° is approximately 130.8°.
Step-by-step explanation:
To convert radians to degrees, we use the conversion factor 1 radian = 57.3°. Now, let's convert -4 radians to degrees:
-4 radians * 57.3°/radian = -229.2°
Since the question asks for the equivalent angle less than 360°, we can add or subtract multiples of 360° to bring the angle within the range.
Adding 360° to -229.2°: -229.2° + 360° = 130.8°
Therefore, the equivalent angle less than 360° for -4 radians is approximately 130.8°.