Evaluate (If Possible) the Sine, Cosine, and Tangent of the Real

Multiple Choice

Evaluate (if possible) the sine, cosine, and tangent of the real number. $t = - \frac { \pi } { 2 }$

A) $t = - \frac { \pi } { 2 }$ corresponds to the point $( x , y ) = ( 0,0 )$ . $\begin{array} { l } \sin \left( - \frac { \pi } { 2 } \right) = 0 \\\cos \left( - \frac { \pi } { 2 } \right) = 0 \\\tan \left( - \frac { \pi } { 2 } \right) = 0\end{array}$
B) $t = - \frac { \pi } { 2 }$ corresponds to the point $( x , y ) = ( - 1,0 )$ . $\begin{array} { l } \sin \left( - \frac { \pi } { 2 } \right) = - 1 \\\cos \left( - \frac { \pi } { 2 } \right) = 0 \\\tan \left( - \frac { \pi } { 2 } \right) = 0\end{array}$
C) $t = - \frac { \pi } { 2 }$ corresponds to the point $( x , y ) = ( 0 , - 1 )$ . $\begin{array} { l } \sin \left( - \frac { \pi } { 2 } \right) = - 1 \\\cos \left( - \frac { \pi } { 2 } \right) = 0 \\\tan \left( - \frac { \pi } { 2 } \right) \text { is undefined }\end{array}$
D) $t = - \frac { \pi } { 2 }$ corresponds to the point $( x , y ) = ( - 1,0 )$ . $\begin{array} { l } \sin \left( - \frac { \pi } { 2 } \right) = 0 \\\cos \left( - \frac { \pi } { 2 } \right) = - 1 \\\tan \left( - \frac { \pi } { 2 } \right) = 0\end{array}$
E) Not possible