A worker is raising a $6\mathrm{.}82-$ m $-$long ladder of mass $60$ kg as shown. Knowing $a=1\mathrm{.}36m$ and that the force exerted by the worker is perpendicular to the ladder, determine:

$($a$)$ the force exerted by the worker

$($b$)$ the reaction at $B.$

You may also want to practice the graphical method, which is probably more difficult for this problem.

F woker $=$ N

$-$

$$

F at $B=$ N

$$