The equation in the first row is:
VelEastAdj sub n equals cosine of the quantity pi (approximately 3.14159) divided by two minus VelAzmAdj sub n end quantity times VelMag sub n
Similarly, the equation in the second row is:
VelNrthAdj sub n equals sine of the quantity pi (approximately 3.14159) divided by two minus VelAzmAdj sub n end quantity times VelMag sub n