Question

calcular α .....................

Answer 1

Explicación paso a paso:

$5 \alpha + 5 \alpha + 90° = 180°$

$10 \alpha + 90° = 180°$

$10 \alpha = 180° - 90°$

$10 \alpha = 90$

$\alpha = \frac{90}{10}$

$\alpha = 9°$