Find the point $( x , y )$ on the unit circle that corresponds to the real number $\frac { 5 \pi } { 6 }$ .Use your results to evaluate $\cos$ .
A) $\cos t = \frac { \sqrt { 3 } } { 2 }$
B) $\cos t = - \frac { \sqrt { 3 } } { 2 }$
C) $\cos t = - \frac { 1 } { 2 }$
D) $\cos t = - 1$
E) $\cos t = 1$

Question

Quizplus · Accepted Answer

The point on the unit circle that corresponds to the real number $\frac{5\pi}{6}$ is in the second quadrant, where the cosine values are negative. The cosine of $\frac{5\pi}{6}$ is $-\frac{\sqrt{3}}{2}$.

Find the Point (x,y)( x , y )(x,y) On the Unit Circle That Corresponds to the Real Number

Find the Point $( x , y )$ On the Unit Circle That Corresponds to the Real Number