Question

Calcule o valor de X nos triângulos dados​

Answer 1

$\large\boxed{\begin{array}{l}\rm Pelo\,teorema\,do\,\hat angulo\,externo\,temos:\\\rm 3x=58^\circ+70^\circ\\\rm 3x=128^\circ\\\rm x=\dfrac{128^\circ}{3}\\\\\rm x=42^\circ40'\end{array}}$