A watermelon seed has the following coordinates: $x=-3\mathrm{.}9m,y=4\mathrm{.}8m,$ and $z=0m.$ Find its position vector as $($a$)$ a magnitude and $($b$)$

an angle relative to the positive direction of the $x$ axis. If the seed is moved to the $xyz$ coordinates $(3\mathrm{.}3m,0m,0m),$ what is its

displacement as $($c$)$ a magnitude and $($d$)$ an angle relative to the positive direction of the $x$ axis? Put the angles in the range $(-180,180].$

$($a$)$ Number

Units

$($b$)$ Number

Units

$($c$)$ Number

Units

$($d$)$ Number

Units