Hub61, regarding your comment below:
is it not 45 miles?, whatever that is in KM
1 degree = 60 miles
I'm not sure who you are aiming it at but:
If it is me, then yes 45 minutes of latitude change is 1 nm and yes 1 degree is 60 minutes. But looking at the initial question, it is clear that the author had mistaken 29 degrees 45 minutes for 2945 minutes. This is a common mistake made by students studying for the ATPL exams.
If your comment is aimed at India Four Two then although 1 minute change of latitude is equal to 1 nm, it is not always true that 1 minute change of longitude.
1 minute change of longitude is equal to 1 nm only at the Equator. But because the circumference of the Earth reduces as we move north or south towards the poles, the distance equating to each minute of longitude also decreases. So distance equating to each minute of longitude is 1nm at the Equator and gradually decreases to zero at the poles.
The parallels of latitude do not converge, so each minute of latitude is always equal to 1 nm.