Решение
1) √3sin60 + cos60sin30 - tg45ctg135 + ctg90 =
= √3 * (√3/2) + (1/2)*(1/2) - 1*ctg(90 + 45) + 0 =
= 3/2 + 1/4 - (- tg45) = 1,5 + 0,25 + 1 = 2,75
2) cos(π/6) - √2sin(π/4) + √3tg(π/3) = √3/2 - √2*(√2/2) + √3*(√3) =
= √3/2 - 1 + 3 = √3/2 + 2 = (√3 + 4)/2