calculation latitude using bearing and distance

how to write coding for distance cos bearing formula in visual basic 6.0 and how to make bearing as input
brittany arseanalstudentAsked:
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David Johnson, CD, MVPOwnerCommented:
use pythagoras theorem to get the latitude change distance.
one degree of latitude is approximately 69 miles (111 kilometers)
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Dr. KlahnPrincipal Software EngineerCommented:
Complexity of the algorithm will depend on what type of surface is assumed and to what degree inaccuracies are acceptable.

On a plane the solution is fairly simple and requires only classical geometry and basic trigonometry.

On a sphere, spherical trigonometry is required to find an exact solution.  However, if the area of interest is limited to a shell fragment bounded by the horizon visible from a 100 foot structure - then the area of interest is a very slightly curved circular shell fragment with a radius of 19.6 Km, and a planar approximation will probably suffice.
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Visual Basic Classic

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