Pelurus ∠AOC adalah …

Jawab:

72°

Penjelasan dengan langkah-langkah:

∠AOC + ∠BOC = 180°

(8x – 20) + (4x + 8) = 180°

12x – 12 = 180°

12x = 180° + 12

12x = 192

x = 192 : 12

x = 16

Pelurus ∠AOC = ∠BOC

= 4x + 8

= 4 x 16 + 8

= 64 + 8

= 72°

Jawaban:

8x – 20 + 4x + 8 = 180

12x – 12 = 180

12x = 192

x = 16

Pelurus AOC = 4x + 8 = 4(16) + 8 = 72°