Spencer Wood
05/16/2023 · Middle School
En cierta clase de matemáticas un estudiante no comprende muy bien un ejercicio, entonces amable- mente le pregunta a su compañero de carpeta, por lo tanto, ambos se embarcan en la solución del pro- blema, el cual decía: Si sen \( 3 \alpha=1 \) y sen \( 3 \beta=-1 \) donde \( 3 \alpha \) y \( 3 \beta \) son ángulos cuadrantales (positivos) y menores que una vuelta, determine: \( \begin{array}{ll}\text { A) } 140^{\circ} & \alpha+\beta \\ \text { C) } 130^{\circ} & \text { B) } 120^{\circ}\end{array} \)
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La respuesta es B) 120°.
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