1) 2 sin(3*15+15°)+3 ctg(90°-2*15)=
2 sin(60°)+3 ctg(60°)=√3+√3=2√3
2) tg(4*15-15°) -2 cos(2*15+30°)=
tg(45°) -2 cos(60°)=1-1=0
1) 2 sin(3*15+15°)+3 ctg(90°-2*15)=
2 sin(60°)+3 ctg(60°)=√3+√3=2√3
2) tg(4*15-15°) -2 cos(2*15+30°)=
tg(45°) -2 cos(60°)=1-1=0