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{x inR:cos2x+2cos^(2)x=2} is equal to...

`{x inR:cos2x+2cos^(2)x=2}` is equal to

A

`{2 n pi +(pi)/(3): n in Z}`

B

`{n pi pm (pi)/(6): n in Z}`

C

`{n pi +(pi)/(3): n in Z}`

D

`{2 n pi -(pi)/(3): n in Z}`

Text Solution

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The correct Answer is:
B
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