A toy drone has been programmed to fly in a pattern of a cosine wave. You are timing the drone's movements. At 11 seconds on your stopwatch, it is 35 feet in the air, which is the highest it gets. At 21 seconds, it has dropped down to 5 feet, which is the lowest it gets. At 31 seconds, it is back up to 35 feet again. It continues in this pattern for a while and you continue to time its movements. What is the amplitude, vertical shift, phase shift, period, variable b, and how many seconds after the 41 second mark until it reaches 23 feet?? URGENT