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If 1 + sin x+ sin^2 x+.... up to oo=4+2 ...

If `1 + sin x+ sin^2 x`+.... up to `oo=4+2 sqrt3, 0ltxlt pi` and `x ne pi/2`, then x=

A

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

B

`pi/6, pi/3`

C

`pi/3,(5 pi)/6`

D

`(2pi)/3, pi/6`.

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MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
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