Matematika

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Tolong yaa.. Kakkk, besok di kumpulin nih...(*^▽^*)
Tolong yaa.. Kakkk, besok di kumpulin nih...(*^▽^*)

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  • 16][
    AOB / COB = AB / CB
    AOB / 90° = 60 / 45
    AOB = 60 × 90°/45
    AOB = 60 × 2
    AOB = 120°

    17][
    Panjang busur AB = 22
    AOB/360° × πd = 22
    AOB/360° × 22/7 × 28 = 22
    AOB/360° × 88 = 22
    AOB/360° = 22/88 = 1/4
    AOB = 360°/4
    AOB = 90°

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