Question

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

Answer 1

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°