If |2 sin theta - cos ec theta| ge 1 and...

If `|2 sin theta - cos ec theta| ge 1 and theta ne (n pi)/(2), n in Z` , then

A

`cos 2 theta ge 1//2`

B

`cos 2 theta ge 1//4`

C

`cos 2 theta le 1//2`

D

`cos 2 theta le 1//4`

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The correct Answer is:

A

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