In GPS Navigation how many miles is 1.Degree?

Answer 1

Between degrees of latitude - 60 nautical miles or 69.6666 approximately standard miles.
Between degrees of longitude (meridians) only at the equator, 1 degree is 60 nautical miles or approximately, 69.66666 standard miles. Approaching either of the poles ( N & S) the distance between degrees becomes less until at the pole there is zero distance, because all the lines of longitude meet at the poles. At a latitude of 60 degrees N or S the distance between degrees of longitude is half (30 nautical miles - 34.833333 standard miles).

Answer 2

60 nautical miles or about 69 statute miles.

"Straight-line" distances along the earth's surface always follow a great circle, which is an imaginary circumference around the planet which intersects the two points. There are any number of great circles and the equator is only one of them, slightly longer than all the others.

So yes, people use nautical miles no matter what direction they're traveling in, otherwise they'd be pretty useless!

PS to lenpol7: The current definition of a nautical mile is 1.852 km or 1.151 miles, making one degree equal to 69.06 miles. There have been several others since the 19th century, but none as far away from this value as you are using. Where did yours come from, and why use so many decimals?

Answer 3

its difficult to say....

for marine navigation one nautical mile = 1 minute or Latitude. so 1 degree of latitude equates to 60 nautical mile, approximately 69 statuary miles or 111.12 Kms

the world is not a perfect sphere but 1 degree = 60Nm is a reasonable approximation

however that you are measuring 1 degree at sea level, it only works in Latitude(N/S), not longitude (E/W)

so you cannot make the same assumption in Longitude.