KCET 2009 Math Solved Paper

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Question : 21 of 61

Marks: +1, -0

If 1+sin‌x+sin‌2x+.... up to ∞=4+2√3,0<x<π and x≠‌

π

2

, then x=

‌
π
6
,‌
π
3
‌
π
3
,‌
5π
6
‌
2π
3
,‌
π
6
‌
π
3
,‌
2π
3

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