how can I rewrite this equation to get a correct answer (in km) 111.1 x cos-1(1.55720185)
cos-1(1.55720185) is impossible as cosine function have a range of -1<x<1
Length of 1 degree of Longitude = cosine (latitude) * length of degree (Kilometers) at equator ,
111.1 x cos-1(1.55720185)
Use cos and NOT cos^-1
111.1 x cos(1.55720185) =111.1 x 0.999630=111.06 Km at equator.
Good job Guest #2
