Originally Posted by

**clayson** Hey need an explanation of how to go about this problem:

An aircraft is sighted due west from a radar station at an elevation of 50 degrees at a height of 8000m and later at an elevation of 39 degrees and a height of 6000m on a bearing of 160 degrees. if it is descending uniformly find the angle of descent and the speed of the aircraft in km/h given that the time between the two observations is 1 minute.

i never knew whether to put this in the pre calculus section or trig section i hope i chose the right one.

thanks.