Question

Determine o valor ângulo α *

Answer 1

$Lembre-se~use~radianos.$

$\boxed{C = \frac{2.\pi.r.\alpha}{360}}$

$2\pi = \frac{2\pi.12.\alpha}{360}$

$720\pi = 24\pi.\alpha$

$\frac{720\pi}{24\pi} =\alpha$

$30 = \alpha$

$\boxed{ \boxed{ \boxed{30=\alpha} } }$

$\Longrightarrow Att, Felipemlvr.$