In the Problem, T Is a Real Number and P $\left( \frac { 4 } { 7 } , - \frac { \sqrt { 33 } } { 7 } \right)$

In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of
the indicated trigonometric function of t.
- $\left( \frac { 4 } { 7 } , - \frac { \sqrt { 33 } } { 7 } \right)$ Find $\cos \mathrm { t } .$

A) $\frac { \sqrt { 33 } } { 7 }$
B) $- \frac { \sqrt { 33 } } { 7 }$
C) $- \frac { 4 } { 7 }$
D) $\frac { 4 } { 7 }$

Correct Answer:

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