Question

sin(60) − cos(90) + tg(45)
sin(45)− cos(0 )+ tg(45)
sin(30)− cos(45 )+ tg(180)

Answer 1

√3/2 - 0 +1=1+√3/2;
√2/2 -1+1=√2/2;
1/2-√2/2+0=(1-√2)/2.