Question

calculati: 
4sin30*-6cos60*+5tg45*
2sin60*-4cos30*+3tg60*
23*+tg37-cos77*-ctg43*

Answer 1

1. 4sin30-6cos60+5tg45
din tabele vei gasi valorile 
4.1/2-6.1/2+5.1=(4-6+10)/2=4

2.  2.sin60-4cos30+3tg60=2.√3/2-4.√3/2+3.1=√3-4√3+3=3-3√3

3.aici nu e complet