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If cos2x=(sqrt2+1)(cosx-1/sqrt2), cos x ...

If `cos2x=(sqrt2+1)(cosx-1/sqrt2), cos x ne 1/2`, then x belong to

A

`{2npi pm pi/3: n in I}`

B

`{2npi pm pi/6: n in I}`

C

`{2npi pm pi/2 : n in I}`

D

`{2n pi pm pi/4 : n in I}`

Text Solution

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The correct Answer is:
D
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