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A Mercator chart has a scale at the equator of 1: 3 704 000. What is the scale at latitude 60°S?

  • A
    1: 7 408 000
  • B
    1: 1 852 000
  • C
    1: 185 200
  • D
    1: 3 208 000

Mercator Chart:

Scale A x cos B = Scale B x cos A

A : Equator
B: 60˚S

3 704 000 x Cos 60˚ = Scale B x Cos 0˚

Scale B = 3 704 000 x 0.5 / 1 = 1 852 000

Scale at 60˚S 1: 1 852 000

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