What islim_(x->1) ( 1 – x)*(tan ((pi*x)/2)) = ? Posted on April 18, 2017 by admin What islim_(x->1) ( 1 – x)*(tan ((pi*x)/2)) = ? What islim_(x->1) ( 1 – x)*(tan ((pi*x)/2)) = ? READ ALSO : What types of modulation are used with cellular phones?