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T h ev a l u eofint0^pi(sin(1+1/2)x)/(si...

`T h ev a l u eofint_0^pi(sin(1+1/2)x)/(sin(x/2))dxi s ,n in I ,ngeq0` `pi/2` (b) 0 (c) `pi` (d) `2pi`

A

`pi`

B

`2pi`

C

`3pi`

D

none of these

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