QUESTION IMAGE
Question
given
find ( m angle b o c ).
( m angle a o c = 9 6 ^ { circ } )
( m angle b o c = 8 x - 6 7 ^ { circ } )
( m angle a o b = 9 x - 7 5 ^ { circ } )
Step1: Escribir la ecuación
Como \(m\angle AOC=m\angle AOB + m\angle BOC\), entonces \(96^{\circ}=(9x - 75)^{\circ}+(8x - 67)^{\circ}\).
Step2: Simplificar la ecuación
Combinar términos: \(96 = 9x+8x-75 - 67\), es decir \(96=17x - 142\).
Step3: Resolver para \(x\)
Sumamos 142 a ambos lados: \(96 + 142=17x\), \(238 = 17x\). Luego \(x=\frac{238}{17}=14\).
Step4: Calcular \(m\angle BOC\)
Sustituir \(x = 14\) en \(m\angle BOC=8x - 67\). \(m\angle BOC=8\times14-67=112 - 67 = 45^{\circ}\).
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\(45^{\circ}\)