Suppose That the Terminal Point Determined By $\text { t }$

Essay

Suppose that the terminal point determined by $\text { t }$ is the point $\left( - \frac { 1 } { - \sqrt { 5 } } , \frac { 2 } { - \sqrt { 6 } } \right)$ on the unit circle. Find the terminal point determined by
(a) $- \pi - t$ ,
(b) $\pi + t$ ,
(c) $2 \pi + t$ ,
(d) $t - 7 \pi$ .