The equation in the first row is:
VelEastAdj sub n equals the cosine (3.141592 divided by 2 minus VelAzmAdj sub n) times VelMag sub n
Similarly, the equation in the second row is:
VelNrthAdj sub n equals the sine (3.141592 divided by 2 minus VelAzmAdj sub n) times VelMag sub n