Two tug boats are towing a large boat, of mass m kg, back to shore. tug boat 1 is pulling with a force of t1 n at an angle of 25 degrees north of the forward motion and tug boat 2 is pulling with a force of t2 n at an angle of 25 degrees south of the forward motion. if the large boat is being pulled with constant velocity, and there is a resistive force of 4000n to the motion, then what are the magnitudes of the two forces t1 and t2?