If max{5sintheta +3sin(theta -alpha)} = ...

If `max{5sintheta +3sin(theta -alpha)} = 7`, then the set of possible value of `alpha` is `(theta in R)`

A

`{x:x = 2npi pm (pi)/(3) , n in I}`

B

`{x:x = 2npi pm(2pi)/(3) , n in I}`

C

`[(pi)/(3) , (2pi)/(3)]`

D

None of these

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The correct Answer is:

A

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