SOLUTION: solve equation below on the interval[0,2pi] cos2x=1/2

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Question 1017185: solve equation below on the interval[0,2pi]
cos2x=1/2
Answer by ikleyn(52908)   (Show Source): You can put this solution on YOUR website!
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solve equation below on the interval[0,2pi]
cos2x=1/2
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Is it  ?   Or  ?

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Comment from student: cos(2x).
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My response: OK.

 =   --->  2x =   --->  x =  = 30 degrees;   

                 or  2x =   --->  x =  = 150 degrees.


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