1.

Line segment AK_(1), K_(2)....... AK_(n) are drawn from A(1,1) where K_(1),K_(2), K_(3)..... K_(n) are points in 1^(st) quadrant on ((x-1)^(2))/(a^(2))+((y-1)^(2))/(b^(2))=1 (a gt b) such that chord AK_(r) makes an angle of (pi)/(2n) with the positive x-axis. The value of lim_(o to oo)((1)/(n)(overset(n)underset(r=1)sum(AK_(r))^(2))) is

Answer»

`(PI)/(2)AB`
`(2)/(pi)ab`
ab
`1//ab`

ANSWER :C


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