Find the Point $( x , y )$ On the Unit Circle That Corresponds to the Real Number

Multiple Choice

Find the point $( x , y )$ on the unit circle that corresponds to the real number t. $$t = \frac { \pi } { 3 }$$

A) $t = \frac { \pi } { 3 }$ corresponds to the point $\left( - \frac { \sqrt { 3 } } { 2 } , - \frac { 1 } { 2 } \right)$ .
B) $t = \frac { \pi } { 3 }$ corresponds to the point $\left( \frac { \sqrt { 3 } } { 2 } , - \frac { 1 } { 2 } \right)$ .
C) $t = \frac { \pi } { 3 }$ corresponds to the point $\left( \frac { 1 } { 2 } , \frac { \sqrt { 3 } } { 2 } \right)$ .
D) $t = \frac { \pi } { 3 }$ corresponds to the point $\left( \frac { \sqrt { 3 } } { 2 } , \frac { 1 } { 2 } \right)$ .
E) $t = \frac { \pi } { 3 }$ corresponds to the point $\left( \frac { 1 } { 2 } , - \frac { \sqrt { 3 } } { 2 } \right)$ .