Derivative Word Problem.
An airplane is flying at an attitude of 10km and will pass directly over a radar antenna. When the radar detects the plane is 260km away it finds the distance between the plane and the radar station is decreasing at the rate of 480km/h. What is the speed of the plane?

Question

Derivative Word Problem. 
An airplane is flying at an attitude of 10km and will pass directly over a radar antenna. When the radar detects the plane is 260km away it finds the distance between the plane and the radar station is decreasing at the rate of 480km/h. What is the speed of the plane?

anonymous · Answer

i got 480.36kmph. do you have a way to check if the answer is correct?

anonymous · Answer

No, this is a assignment so I don't have the answers. Just wondering how to get started with this. I have done other problems like this but this one is weird to me.

surry99 · Answer

Hint: draw a diagram first