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A and B are positive acute angles satisf...

A and B are positive acute angles satisfying the equation `3cos^2A +2cos^2B=4`, `(3sinA)/(sinB)=(2cosB)/(cosA)` then `A+2B` is

A

`pi/2`

B

`pi/3`

C

`pi/4`

D

`pi/6.`

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