What is the unit-vector notation for each of the following vectors, all with magnitudes of 16.5?
(a) Vector $\vec{E}$ with direction of 55.0° counterclockwise from the +x-axis.
$\vec{E}=$
(b) Vector $\vec{F}$ with direction of 55.0° counterclockwise from the +y-axis.
$\vec{F}=$
(c) Vector $\vec{G}$ with direction of 55.0° clockwise from the -y-axis.
$\vec{G}=$