physics HELP
posted by maria .
A 60.0 kg skier rides a 2740 m long lift to the top of a mountain. The lift makes an angle of 14.7¡ã with the horizontal. What is the change in the skier's gravitational potential energy?

P.E change = M g H
H is the change in elevation, 2740 sin 14.7 meters
g = 9.8 m/s^2
M = 60.0 kg 
75.0kg skier rides a 2730mlong lift to the top of a mountain. The lift makes an angle of 12.0° with the horizontal. What is the change in the skier’s gravitational potential energy?