Question

Os arcos cujo as medidas são pi/5rad e pi/9rad correspondem respectivamente A
medida de quais ângulos?
(A) 36° e 20°
(B) 20° e 40°
(C) 36° e 40°
(D) 20° e 36°
(E) 40° e 36°

(Prfv,me ajude)​

Answer 1

π/5 = 180/5 = 36°

π/9 = 180/9 = 20°

(A) 36° e 20°

Answer 2

$1\pi rad=180\degree$

$\boxed{\boxed{\frac{\pi}{5}rad=\frac{180\degree}{5}=36\degree}}$

$\boxed{\boxed{\frac{\pi}{9}rad=\frac{180\degree}{9}=20\degree}}$

$\mathfrak{alternativa}\: \mathfrak{a}$