tolong ya pake caranya

✔Garis lurus AOD = 180°
✔ Sudut COD = x°
✔ Sudut BOA = (3x - 12)°
✔ Sudut BOC = 2x°

Ditanya Nilai sudut BOA

Jawaban :

AOD° = COD° + BOD° + BOC°
180 = x + (3x - 12) + 2x
180 = 6x - 12
180 + 12 = 6x
192 = 6x
192/6 = x
32 = x

Maka, sudut BOA :
= (3x - 12)
= 3(32) - 12
= 96 - 12
= 84°

jawaban B...


Semoga membantu. ✔