The sum of an infinite geometric series whose first term is the limit of the function f(x) = (tanx - sinx)/sin3x as x → 0 and whose common ratio is the limit of the function g(x) = (1 - √x)/(cos-1x)2 as x → 1, is
(A) 1/3
(B) 1/4
(C) 1/2
(D) 2/3
Answer is (D) 2/3
Let first term of on infinite G.P. is a & common ratio of infinite G.P. is r
