Question

Вычислите: 

4cos14п3-sin25п6+tg17п4

 

 

 

помогите срочно, люди добрые!!!!!!!!!!!!!!!!!!

Answer 1

cos14п3=cos2π/3=-cosπ/3=-1/2
sin25п6=sinπ/6=1/2
tg17п4=tgπ/4=1
4*(-1/2)-1/2+1=-2-1/2+1=-1 1/2