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If cos 3 x + sin (2 x - (7 pi)/(6)) = - ...

If `cos 3 x + sin (2 x - (7 pi)/(6)) = - 2` then x is equal to `(k in Z)`

A

`(pi)/(3) (6 k + 1)`

B

`(pi)/(3) (6 k - 1)`

C

`(pi)/(3) (2 k + 1)`

D

`(pi)/(3) (2 k - 1)`

Text Solution

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The correct Answer is:
A
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