Ta có: $\widehat{A_{2}}$ = $\alpha$ = $30^{\circ}$ (vì cùng phụ với $\widehat{A_{1}}$)
$\Rightarrow$ |$\vec{F_{1}}$| = a.cos$30^{\circ}$ = $\frac{\sqrt{3}}{2}$a
|$\vec{F_{2}}$| = a.sin$30^{\circ}$ = $\frac{1}{2}$a
Ta có: $\widehat{A_{2}}$ = $\alpha$ = $30^{\circ}$ (vì cùng phụ với $\widehat{A_{1}}$)
$\Rightarrow$ |$\vec{F_{1}}$| = a.cos$30^{\circ}$ = $\frac{\sqrt{3}}{2}$a
|$\vec{F_{2}}$| = a.sin$30^{\circ}$ = $\frac{1}{2}$a