Question

Calcular a área dos seguintes triângulos:​

Answer 1

$\Large\boxed{\begin{array}{l}\sf figura:1\\\sf A=\dfrac{1}{2}\cdot 6\cdot8\cdot sen(30^\circ)\\\\\sf A=\dfrac{1}{2}\cdot6\cdot8\cdot\dfrac{1}{2}=\dfrac{48}{4}=12~cm^2\\\\\sf figura:2\\\sf A=\dfrac{1}{2}\cdot15\cdot10\cdot sen(60^\circ)\\\\\sf A=\dfrac{1}{2}\cdot15\cdot10\cdot\dfrac{\sqrt{3}}{2}=\dfrac{150\sqrt{3}}{4}=\dfrac{75\sqrt{3}}{2}~u\cdot a\end{array}}$