1.

Statement 1: The value of cot^(-1)((7)/(4))+cot^(-1)((19)/(4))+...+cot^(-1)((4r^(2)+3)/(4))+... upto infinity istan^(-1)(2). Statement 2: sum_(r=1)^(n)"tan"(x_(r)-x_(r-1))/(1+x_(r-1)x_(r))=tan^(-1)x_(n)-tan^(-1)x_(0).

Answer»

Statement-1 is TRUE, Statement-2 is True and Statement-2 is a CORRECT EXPLANATION forStatement-1.
Statement-1 is True, Statement-2 is True and Statement-2 is NOT a correct explanation forStatement-1.
Statement-1 is True, Statement-2 is FALSE.
Statement-1 is False, Statement-2 is True.

Answer :A


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