Question

sabiendo que : Sen (2x-y) cosec 70°=1 Tg (x+y) =cotg 40°

Answer 1

»sen(2x-y)°.csc70°=1 »tg(x+y)°=ctg40°
2x-y=70° x+y+40=90
x=50-y
reemplaza:2(50-y)-y=70°
100-2y-y=70
30=3y
y=10 ; x=40