Question

dois angulos adjacentes complementares tem suas medidas expressas por 3x e x + 18°. determine as medidas desses angulos.

Answer 1

$3x+x+18^{\circ}=180^{\circ}$

$4x=180^{\circ}-18^{\circ}$

$4x=162^{\circ}$

$x=\dfrac{162^{\circ}}{4}$

$x=40,5^{\circ}$

Os ângulos são

$3x=3\cdot40,5^{\circ}=\boxed{121,5^{\circ}}$

$x+18^{\circ}=40,5^{\circ}+18=\boxed{58,5^{\circ}}$