Tolong dibantu ya kakak
Pertama kita cari nilai x :
BOC + AOB = 180
3x + 40 + 2x = 180
3x + 2x = 180 - 40
5x = 140
x = 140/5
x = 28°
Penyiku AOB = 90 - AOB
= 90 - 2x
= 90 - 2(28)
= 90 - 56
= 34°
Jawab:
x = 28
∠BOC = 124°
Penyiku ∠AOB = 34°
Penjelasan dengan langkah-langkah:
2x + 3x + 40° = 180 (garis lurus)
5x = 140°
x = 140/5
x = 28
∠BOC = 3x + 40°
∠BOC = 3(28) + 40
∠BOC = 124°
∠AOB = 2(28)
∠AOB = 56°
Penyiku ∠AOB = 90 - 56
Penyiku ∠AOB = 34°
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