A train at a constant $66\mathrm{.}0k\frac{m}{h}$ moves east for $32\mathrm{.}0$min, then in a direction $49\mathrm{.}0$ east of due

north for $26\mathrm{.}0$min, and then west for $42\mathrm{.}0$min. What are the $($a$)$ magnitude and $($b$)$ angle

$($relative to east$)$ of its average velocity during this trip?

$($a$)$ Number

Units

$($b$)$ Number

Units