Sir, Actually i am doing project RF RANGE FINDER which will calculate
the location and direction of FM radio station only within certain
range u can say if device is placed in ur islamic university it will
tell us location and direction of FM radiostation from my device.It is
hardware based project and interfacing on Laptop

Now
Problem 1
I knew the three different physical path of certain FM radio station
from my device.Now how i will determine the point of intersection of
these three physical paths by using trilateration equations.(Three
paths are must be taken by placing our device at three different
points because we are using trilateration).
& what will be the minimum distance between two points (i.e device
location )
Problem 2
Which trilatertion equation help me in calculating my cyclic error.