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

question 257

Multiple Choice

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) \(\cos t = 1\)

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