Inverse COGO Problem: Start with a sketch. a$)$ A total station instrument is set up at point C and a back sight is

taken to point D $,$ compute the distance $($to $0\mathrm{.}01$ ft $.),$ azimuth and bearing $($in degrees, minutes and seconds, to $1$

second of arc$)$ of the line CD $.$ b$)$ If the total station instrument is set up at point E with a back sight taken to point F $,$

calculate the same information you did in part $($a$)$ for line EF$.$

$x_C=458\mathrm{.}25ft,x_D=380\mathrm{.}88ft$

$Y_C=465\mathrm{.}49ft,Y_D=367\mathrm{.}38ft$

$,$

$x_E=567\mathrm{.}35ft,x_F=525\mathrm{.}33ft$

$Y_E=334\mathrm{.}78ft,Y_F=366\mathrm{.}28ft$