Question

calcula ''x''...... ​

Answer 1

RESOLUCIÓN:

$50 + \alpha = 90 \\ \alpha = 90 - 50 \\ \alpha = 40$

$x + \alpha + 40 = 90 \\ x + 40 + 40 = 90 \\ x + 80 = 90 \\ x = 90 - 80 \\ x = 10$

RESPUESTA:

c) 10°