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Let 0lt theta(1)lt theta(2)lt theta(3)lt...

Let `0lt theta_(1)lt theta_(2)lt theta_(3)lt `…….. Denote the positive solution of the equation `3+3cos theta=2sin^(2) theta`.The value of `theta_(3)+theta_(7)` is

A

`6pi`

B

`7pi`

C

`8pi`

D

`4pi`

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A
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