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If an int0^(pi/2) (sin^2nx)/(sin^2x) dx,...

If `a_n int_0^(pi/2) (sin^2nx)/(sin^2x) dx, then |(a_1,a_51, a_101),(a_2, a_52, a_102),(a_3, a_53, a_103)=` (A) 1 (B) 0 (C) -1 (D) none of these

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