SOLUTION: what is the solution set for 2 cos theta -1=0 in the interval 0 degrees equal to or less than theta <360 degrees?

Question 748177: what is the solution set for 2 cos theta -1=0 in the interval 0 degrees equal to or less than theta <360 degrees?

Found 2 solutions by solver91311, Cromlix:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Use the unit circle to find the two angles in the given interval where the cosine is equal to 1/2.

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it

Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
2 cos theta - 1 = 0
2 cos theta = 1
cos theta = 1/2
theta = 60 degrees (pi/3) or 300 degrees (5 pi/3)
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