jika besar <BAC=64°,maka tentukan... a.nilai x b.besar <ACB d.besar <ABC pakai cara ya kak,thx

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  • < BAC = 64°

    Jawaban

    ➡sudut garis lurus = 180°

    Maka,

    < BAC + < CAE = 180°
    64 + < CAE = 180
    <CAE = 180 - 64
    <CAE = 116
    (8x + 4) = 116
    8x = 116 - 4
    8x = 112
    x = 112/8
    x = 14 ✔


    Maka,
    <BCD = 7x - 2
    <BCD = 7(14) - 2
    <BCD = 96° ✔

    A) < ACB

    <ACB = 180 - <BCD
    <ACB = 180 - 96
    <ACB = 84° ✔

    B). <ABC

    <ABC = 180 - <BAC - <ACB
    <ABC = 180 - 64 - 84
    <ABC = 32° ✔

    Semoga membantu

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