Compute the internal angle, $\backslash$Psi $($psi$)$ between points A and B given the following information

Average Vertical Angle is $4\mathrm{.}1276$o

Geodetic height at A is $457\mathrm{.}949$ m

Point to Point Slope Distance between A and B is $15995\mathrm{.}204$ m

R$\backslash$alpha from A to B is $6379530\mathrm{.}022$

Give answer in Decimal Degress and Round answer to $5$ decimal places