The Point P(x, Y) on the Unit Circle That Corresponds $\left( - \frac { \sqrt { 7 } } { 4 } , - \frac { 3 } { 4 } \right) \quad$

The point P(x, y) on the unit circle that corresponds to a real number t is given. Find the values of the indicated
trigonometric function at t.
- $\left( - \frac { \sqrt { 7 } } { 4 } , - \frac { 3 } { 4 } \right) \quad$ Find cot $t$ .

A) $\frac { \sqrt { 7 } } { 3 }$
B) $- \frac { \sqrt { 7 } } { 3 }$
C) $- \frac { 3 \sqrt { 7 } } { 7 }$
D) $\frac { \sqrt { 7 } } { 4 }$