Question

In triunghiul ABC cu m(A)=90, cunoastem ca AB=9 cm si AC=12cm.Sa se calculeze sinB, cosB,tgB si ctgB!
Va rog mult

Answer 1

In triunghiul ABC  m<A=90
=>T.P
BC^2=AB^2+AC^2
BC^2=81+144
BC^2=225
BC=$\sqrt{x}$225
BC=15
sinB=12/15
cosB=9/15
tgB=12/9
ctgB=9/12