My question is that I don't understand both the explanation and the correct answer.

As per my understanding, to calculate the distance, I must use the formula : Ch.long x cos(mean lat)

So the correct calculation should be 26 x 60 x cos (63 ) =

It is the same explanation for Question ID 330029

Am I missing something ?

Thank you very much for your help.

Fouga

As per my understanding, to calculate the distance, I must use the formula : Ch.long x cos(mean lat)

So the correct calculation should be 26 x 60 x cos (63 ) =

**708 NM**It is the same explanation for Question ID 330029

Am I missing something ?

Thank you very much for your help.

Fouga

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