Find the Component Form of the Specified Vector $\pi / 3$

Find the component form of the specified vector.
-The unit vector that makes an angle $\pi / 3$ with the positive $x$ -axis

A) $\left\langle \frac { - 1 } { 2 } , \frac { - 1 } { 2 } \right\rangle$
B) $\left\langle \frac { 1 } { 2 } , \frac { \sqrt { 3 } } { 2 } \right\rangle$
C) $\left\langle \frac { - 1 } { 2 } , \frac { - \sqrt { 3 } } { 2 } \right\rangle$
D) $\left( \frac { \sqrt { 3 } } { 2 } , \frac { 1 } { 2 } \right)$