2 * sin30° + 6 * cos60° - 4 * tg45° = 2 * 1/2 + 6 * 1/2 - 4 * 1 = 2/2 + 6/2 - 4 = 1 + 3 - 4 = 4 - 4 = 0.
sin30=1/2
tg45=1/2
cos60=1/2
2*1/2+6*1/2-4*1/2=0
2 * sin30° + 6 * cos60° - 4 * tg45° = 2 * 1/2 + 6 * 1/2 - 4 * 1 = 2/2 + 6/2 - 4 = 1 + 3 - 4 = 4 - 4 = 0.
sin30=1/2
tg45=1/2
cos60=1/2
2*1/2+6*1/2-4*1/2=0