[ericsmith3d]

Slight change:
True-Wind Speed = (( a * a ) + ( b * b )) 1/2
should be
True-Wind Speed = (( a * a ) + ( b * b )) ^1/2
i.e. it's the square root of the sum of the squared sides, the Pythagorean Theorem.
Same for the formula for Apparent-Wind Speed.