and units library Why Columbus thought that he reached India? 55// length of degree of latitude estimation by medieval Persian geographer // Abu al Abbas Ahmad ibn Muhammad ibn Kathir al-Farghani (a.k.a he reached India? ROMAN FOOT (PES) ROMAN PACE ROMAN MILE 59// length of degree of latitude estimation by medieval Persian geographer // Abu al Abbas Ahmad ibn Muhammad ibn Kathir al-Farghani (a.k.a and units library Why Columbus thought that he reached India? 60// length of degree of latitude estimation by medieval Persian geographer // Abu al Abbas Ahmad ibn Muhammad ibn Kathir al-Farghani (a.k.a

256 ∗ 1036 = 2.56 ∗ 103814/15 Relative error of the estimation The relative error of 210 ≈ 1000 is 2.34%.14/15 Relative error of the estimation The relative error of 210 ≈ 1000 is 2.34%. The relative 250 11.18% 2110 22.96% 2170 33.18% 260 13.26% 2120 24.77% 2180 34.75%14/15 Relative error of the estimation The relative error of 210 ≈ 1000 is 2.34%. The relative error only increases on the ten steps: