On a Mercator chart, the scale:

Question

Question ATPL - Airline Transport Pilot license - General Navigation

QuizVDS · Accepted Answer

Varies as 1/cosine of latitude (1/cosine=secant).

QuizVDS · Answer

Is constant throughout the chart.

QuizVDS · Answer

Varies as the sine of the latitude.

QuizVDS · Answer

Varies as 1/2 cosine of the co-latitude.

Id 466 - ATPL - On a Mercator chart, the scale: