Ppruners... thanks for the links
Enicalyth... Wow.. U completely lost me
Tim Zukas... what i actually want to do is build the take off cone using simple co-ords formulas. ie. Using runway heading, and the co-ords for the rwy end, i want to build the takeoff cone. Such that when a notam mentions an obstacle at a particular co-ord position, I can enter it into an excel macro to check if it is inside the cone or not.
adding a step of complexity, i want to add a turn (speed + heading change) to my cone, ad do the same as above.
Rgds
O\z