Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.30x106 N, one at an angle 18.0 west of north, and the other at an angle 18.0 east of north, as they pull the tanker a distance 0.850 km toward the north. What is the total work done by the two tugboats on the supertanker? Express your answer in joules, to three significant figures. View Available Hint(s)