In figure $1,h_{},h_{r,},z,$ and the measured slope length $L$ were $5\mathrm{.}53ft,6\mathrm{.}00ft,93{20}^{\text{'}}{06}^{\text{'}\text{'}}$ and $489\mathrm{.}65$ ft $,$ respectively. Calculate the horizontal length between A and $B$ if a total station measures the distance $($curvature & refraction not required$).$

$2,489\mathrm{.}64ft$

Work: $93{200}^{\text{'}}{06}^{\text{'}\text{'}}={90\mathrm{.}335}^{\text{'}\text{'}},z=90+=2=2-90=90\mathrm{.}735-91=0\mathrm{.}335$

$4=$Lxcos$=489\mathrm{.}659cos(0\mathrm{.}335)$

$=489\mathrm{.}645+$