LINK TO ORIGINAL QUESTION WITH VALUES:

https:$//$www$.$chegg.com$/$homework$-$help$/$questions$-$and$-$answers$/1-$use$-$method$-$virtual$-$work$-$determine$-$vertical$-$horizontal$-$displacements$-$point$-$d$-$steel$-$truss$--$q$95185785$

How did he get these values in his working out?

$($v$)$ B jont

$fy=0$

$f_{BA}sin-f_B$insin$=>58\mathrm{.}50$

$f_{BA}=>425\mathrm{.}246+1\mathrm{.}945f_{BC}$

$f_x=0$

$f_{BA}cos+f_B$incos$=>210\mathrm{.}60$

$f_{BR}=>212\mathrm{.}62-0\mathrm{.}9727$fBE

:$.,$fBE$=>1$

I $(c),f_{BA}=>283\mathrm{.}50$