Q$\mathrm{.}1)$ Consider a truss $\backslash ($ A B C $\backslash )$ with a force $\backslash ($ P $\backslash )$ at $\backslash ($ A $\backslash )$ as shown in the following figure, The tension in member $\backslash ($ C B $\backslash )$ is $[2$ marks$]$

$($A$)0\mathrm{.}5$ P

$($B$)0\mathrm{.}63$ P

$($C$)0\mathrm{.}073$ P

$($D$)0\mathrm{.}87$ P

$($E$)$ Other answer $\backslash (=\backslash )?$