SOLUTION: Find all solutions to the equation. cos x = -1/2

Question 732671: Find all solutions to the equation.
cos x = -1/2
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
We know that (or if measuring angles in radians).
Negative cosines happen only in the second and third quadrants.

(or in radians) shows us one of the solutions.
An angle with the same cosine in the third quadrant is (or in radians and that is another solution.
The other solutions are all angles coterminal with those two angles.
They can all be expressed as
or for any integer .
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