= Tg30 cos30 sin30 tg45 tg60
= tan(30) cos(30) sin(30) tan(45) tan(60)
= (√3/3) (√3/2) (1/2) 1 √3
= (√3√31/322) √3
= 3/12 √3
= 1/4 * √3
= √3 / 4