8tg150˚ x sin(-300˚) x cos720˚

Question

8tg150˚ x sin(-300˚) x cos720˚

Answer 1

Вроде так:

=8tg(180-30)*(-sin(360-60)*cos(360*2)=-8tg30*sin60*cos360= -8*кореньиз3/3*кореньиз3/2*1 = -4