Răspuns :
m(∡A)/m(∡B)=4/5
m(∡A)=4k
m(∡B)=5k
m(∡A)+m(∡B)=90°
4k+5k=90°
9k=90°
k=90°:9
k=10°
m(∡A)=4*10°=40°
m(∡B)=5*10°=50°
m(∡A)=4k
m(∡B)=5k
m(∡A)+m(∡B)=90°
4k+5k=90°
9k=90°
k=90°:9
k=10°
m(∡A)=4*10°=40°
m(∡B)=5*10°=50°
m(∡A)+m(∡B)=90°
m(∡A)/m(∡B)=4/5
m(∡A)=4k
m(∡B)=5k
4k+5k=90°°
9k=90°
k=10°
m(∡A)=4k=4×10°=40°
m(∡B)=5k=5×10°=50°