Question

Ajutor !!!!!!!!
Vă rog mult !!!!!!!​

Answer 1

Răspuns:

Explicație pas cu pas:

aplic TP,     BC^2=AC^2+AB^2

1920=1152+AB^2

AB^2=1920-1152=768

AB=V768=16V3

sinB=AC/BC=24V2/8V30=3/V15=3V15/15=V15/5

cosB=AB/BC=16V3/8V30=2/V10=2V10/10=V10/5

sinC=AB/BC=cosB=V10/5

cosC=AC/BC=sinB=V15/5

tg B=sin B/CosB=V15/5 : V10/5=V15/5  * 5/V10=V15/V10=V3/V2=V6/2

tg C=sinC/cos  C=2/V6=2V6/6=V6/3

La fel procedezi si  la b si  C