Find the Reference Number For $t = - \frac { \pi } { 6 }$

Multiple Choice

Find the reference number for $t = - \frac { \pi } { 6 }$

A) $\bar { t } = \frac { 11 \pi } { 6 }$
B) $\bar { t }= - \frac { 5 \pi } { 6 }$
C) $\bar { t }= \frac { \pi } { 6 }$
D) $\bar { t } = \frac { \pi } { 12 }$
E) $\bar { t }= - \frac { \pi } { 6 }$