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

question 226

Multiple Choice

Find the point $( x , y )$ on the unit circle that corresponds to the real number $t = - \frac { \pi } { 6 }$ .Use your results to evaluate cos t.

• A)cos t = 1
• B)cos t = -1
• C) \(\cos t = - \frac { \sqrt { 3 } } { 2 }\)
• D) \(\cos t = \frac { \sqrt { 3 } } { 2 }\)
• E) \(\cos t = \frac { 1 } { 2 }\)

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