I'm working with coordinates ECEF xyz to Latitude, Longitude, Height From x,y,z i have a numbers, and when i make the conversation for the first one, Latitud, i have my x and y. x=4201473.689127885 y=172421.1368615774 So when i follow the equation for latitude, my x and y are in radians latitude=math.atan2(x/y) my result is 1.52978108937303 And if i do it in the calculator the arctan of x and y gives me 87.65 But i don't understand why i have differents resutls. Continue reading...