Michaelle decided to go to the playground. She saw two boys at the swing set, composed of a board and two seats.
Michaelle obtained the following mathematical model for height above the ground of a seat under which she put a location sensor (in dark brown, picture below):
where is expressed in metres and time in seconds.
If the period of this motion is , the initial distance from the ground to the seat is , and the center of oscillation is , what is (rounded to the nearest hundredth)?