Owen is building a ramp for his skateboard. the ramp needs to reach platform that is 2 feet of the ground. he is not sure if he wants the ramp to have 15 degree angle or 20 degree angle of the elevation with the ground. to the nearest hundredth of a foot, how much longer will the ramp need to be if he choose the 15 degree angle of elevation over the 20 degree angle of elevation?