2sin 5π/6-4cos 2π/3+6sin 3π/4-ctg 2π/3+tg 5π6=
= 2*(1/2) -4*(- 1/2) +6*(√2/2) - ( - 1/√3) +(-1/√3) = 1+2+3√2 = 3+ 3√2
2sin 5π/6-4cos 2π/3+6sin 3π/4-ctg 2π/3+tg 5π6=
= 2*(1/2) -4*(- 1/2) +6*(√2/2) - ( - 1/√3) +(-1/√3) = 1+2+3√2 = 3+ 3√2