Tg^2 п/4+2sin п/12*cos п/12-ctg^2 п/4

Question

Tg^2 п/4+2sin п/12*cos п/12-ctg^2 п/4

Answer 1

Tg^2 п/4+2sin п/12*cos п/12-ctg^2 п/4 =

=1 + Sin π/6 -1 = 1/2