Besar sudut AOC adalah Pake cara yaa

cari "x" dulu
180° = (2x+15)°+6x°+(5x-30)°
180° = 13x - 15
195/13 = x

6(x)= hitung

180° = (2x + 15)° + 6x° + (5x - 30)°
180° = (13x - 15)°
13x° = 180° + 15°
13x° = 195°
x° = 15°

sudut AOC = 180° - (5x - 30)°
sudut AOC = 180° - (5(15) - 30)°
sudut AOC = 180° - (75 - 30)°
sudut AOC = 180° - 45°
sudut AOC = 135°

Jawaban: A.

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