A barge is being towed by two tugboats, using ropes with force vectors as shown. two vectors named F sub 1 and F sub 2 that share an initial point from the barge each pointing to a different tugboat Given vector F sub 1 equals open angled bracket 10000 comma 6000 close angled bracket and vector F sub 2 equals open angled bracket 13500 comma negative 7000 close angled bracket comma what is the angle between the ropes? (2 points) 21° 27° 58° 66°