SOLUTION: solve with respect to x: {{{ y=2cosx}}} in the range [0, 2pi]

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Question 287186: solve with respect to x: +y=2cosx in the range [0, 2pi]
Found 2 solutions by CubeyThePenguin, ikleyn:
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
2(cosx) = 0
cos x = 0
x = pi/2 + kpi where k is an integer

between [0, 2pi] --->x = pi/2 and 3pi/2 are solutions

Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.

            The response by @cubeyThePenguin is  IRRELEVANT.

            I came to bring the correct solution 


x = arccos%28y%2F2%29.

Solved (correctly).