



 
Hi Tony. Perhaps this diagram will help. North is upwards. You want the length of segment XY. First find the interior angle measurements of triangle ABX. Then you can use the Law of Sines to calculate the length of segment BX. Once you have that, the last step is to use it in the right triangle BXY in a trig function of angle YBX to calculate the length XY. Hope this helps,  


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