SOLUTION: I need help figuring this out. Thank you. Find all the real values of y such that cos y = -1/2

Question 888889: I need help figuring this out. Thank you.
Find all the real values of y such that cos y = -1/2
Answer by harpazo(655) (Show Source): You can put this solution on YOUR website!
You can use any unit circle picture online.
On the unit circle, a point is given to be (x,y) = (cosine,sine).
Where on the unit circle is y or sine = -1/2?

At y = 11pi/6, and 7pi/6, the value is given to be -1/2.

One the unit circle, y or sine equals -1/2 at the two above radian values given.

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