Consider the two vectors $=33$ and $=4.$

$($a$)$ Calculate $+$

$+$

$($b$)$ Calculate $$

$+$

$($c$)$ Calculate

$+$

$($d$)$ Calculate

$$

$($e$)$ Calculate the directions of $+$ and $.$

$+($counterclockwise from the $+$x axis$)($counterclockwise from the $+$x axis$)$