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let thetein[-2pi,2pi] and 2cos^(2)theta+...

let `thetein[-2pi,2pi]` and 2cos^(2)theta+3sintheta=0` then sum of all solution is

A

`(13pi)/(6)`

B

`(5pi)/(3)`

C

`2pi`

D

`pi`

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The correct Answer is:
C
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