Before making calculations, simplify and evaluate each term/factor separately:


1)   =  = 1;


2)   =  = ;


3)   =  =  =  = -2;


4)   =  =  =  = 2.


Now you have everything to complete calculations in one line:


tan(17π/4)cos(-11π/4)+sec(-34π/3)csc(25π /6) =  = .