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If 0lt x lt (pi)/(2) and 1+ sin x+ sin ^...

If `0lt x lt (pi)/(2) and 1+ sin x+ sin ^(2) +sin ^(3) x+…oo= 4+2 sqrt3, ` then the value of x is-

A

`pi/4`

B

`pi/3 `

C

`(3pi)/(4)`

D

`(pi)/(6)`

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The correct Answer is:
B
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