Matematika

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  • dik = AOD = 90

    AOC + COD = 90
    50 + COD =90
    COD = 90 - 50
    COD = 40

    dik = DOB = 75
    DOB + AOB = 90
    75 + AOB = 90
    AOB = 90 -75
    AOB = 15

    DOC + AOB + BOC = 90
    40 + 15 + BOC = 90
    BOC =90 - (40 +15)
    BOC =90 - 55
    BOC = 35

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