A plane flying parallel to the ground at a height of 4 km passes over a radar station. A short time later, the radar equipment reveals that the plane is 5 km away and that the distance between the plane and the station is increasing at a rate of 300 km per hour. At that moment, how fast is the plane moving horizontally?
I drew a picture of a right triangle and labeled the appropriate legs. I know that, at that time, the plane and the radar station are 5 km apart. I also know that D = RT ("distance equals rate times time").
Our teacher told us to use derivatives, but I can't figure out how to complete the problem or the equation to use to even find a derivative. I just need help getting started and the equation or formula to use.
I drew a picture of a right triangle and labeled the appropriate legs. I know that, at that time, the plane and the radar station are 5 km apart. I also know that D = RT ("distance equals rate times time").
Our teacher told us to use derivatives, but I can't figure out how to complete the problem or the equation to use to even find a derivative. I just need help getting started and the equation or formula to use.
