Question

exercitiul 5 si 6 va rog frumos

Answer 1

pt 6
Aria este = $\frac{l1*l2*sin(l1;l2)}{2}$
A=$\frac{AB*AC*sinA}{2} = \frac{AB*2*sin30}{2} = \frac{AB*2* \frac{1}{2} }{2} = \frac{AB}{2} =7$
resulta AB=14