QUESTION IMAGE
Question
a right triangle has one angle that measures 69°. what is the measure of the other acute angle?
Step1: Suma de ángulos en triángulo
La suma de los ángulos internos de un triángulo es $180^\circ$. Un triángulo rectángulo tiene un ángulo de $90^\circ$.
Step2: Restar ángulos conocidos
Restamos los ángulos已知 del total: $180^\circ - 90^\circ - 69^\circ$
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$21^\circ$