Ma'am sinz/z la z ku 1 kudutha eppadi 1 aagum? Sin (1) /1=pi/2 apdi dhaane ma'am varum and also 1 kudukkumpodhu z tends to 1 nu dhaana ma'am podanum. Ma'am last la lim value apply panlana namakku sinz/z nu kedaikkum dhaane ma'am. Adha vechiye pole of order 1 nu sollalama ma'am ( denominator is z whose power is 1)