Respuesta:
β = 10
Explicación paso a paso:
50 + β + 3β = 90°
50 + 4β = 90
4β = 40
β = 40/4
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Respuesta:
β = 10
Explicación paso a paso:
50 + β + 3β = 90°
50 + 4β = 90
4β = 40
β = 40/4
β = 10