1) Se considera ▲ drept. ABC,A=90°
a)AB=6, BC=10,calculati Ac ,sin C ,cosC ,tgB, ctgB .
b) BC=25, sinC=3 supra 5 , calculati AB ,AC ,cosB ,tgC
c) AB=5 ,AC=5rad3,calculati BC ,sinB ,cosB ,tgC ,ctgC
d) AB=6, cosB 1supra 2 ,calculati BC, AC,sinC ,ctgB
e) AC=12, tgC=1,25,calculati AB , BC,sinB si cosB .