Hi,

I am really confused on these 2 things:

When I see a question like this:

A Lambert conformal conic chart has a constant of the cone of 0.80. A straight line course drawn on this chart from A (53?N 004?W) to B is 080? at A; course at B is 092?(T). What is the longitude of B?

I assume 92-80 is 12 being the conversion ANGLE. but, its actually the convergency....and a formula convergency = CH long x Constant of the cone is used.

Other times I see a similair question maybe not specifying a Lamberts, maybe specifying a grid, or no chart mentioned at all and 12 will turn out to be the conversion ANGLE ( IE inbound track 90 degrees and true track 102 degrees ) and convergency would in fact be 24 degrees.

How do we know which one to choose? seems comletely arbitrary...

I am really confused on these 2 things:

When I see a question like this:

A Lambert conformal conic chart has a constant of the cone of 0.80. A straight line course drawn on this chart from A (53?N 004?W) to B is 080? at A; course at B is 092?(T). What is the longitude of B?

I assume 92-80 is 12 being the conversion ANGLE. but, its actually the convergency....and a formula convergency = CH long x Constant of the cone is used.

Other times I see a similair question maybe not specifying a Lamberts, maybe specifying a grid, or no chart mentioned at all and 12 will turn out to be the conversion ANGLE ( IE inbound track 90 degrees and true track 102 degrees ) and convergency would in fact be 24 degrees.

How do we know which one to choose? seems comletely arbitrary...

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