besar <BOA adalah... tolong dengan caranya ya

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2 Jawaban

  • x - 5° + 1,5x + x + 10° = 180°
    3,5x + 5° = 180°
    3,5x = 180° - 5°
    3,5x = 175°
    x = 175° : 3,5
    x = 50°

    Sudut BOA = x + 10° = 50° + 10° = 60° (D)

  • x - 5 + 1,5x + x + 10 = 180
    3,5x = 175
    x = 50

    <BOA = 50 + 10 = 60°

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