Question

Calculati aria unui teren ABCD , in forma de paralelogram , cu AB=60 m , AD=50 m si m(<A) = 60 grade . Ajutati-ma va rog

Answer 1

[tex]Fie \; DD'\bot AB, \; D'\in (AB)\\ \sin 60=\dfrac{DD'}{AD}=\dfrac{\sqrt3}{2} \Rightarrow DD'=25\sqrt3\\ A_{ABCD}=AB\cdot DD'=60\cdot 25\sqrt3 = 1500\sqrt3 \; m^2[/tex]