Jawab:
Penjelasan dengan langkah-langkah:
Besar sudut berpelurus = 180°
180 = 7x + 2x
180 = 9x
x = 180/9
x = 20
Besar sudut BOC = 2x = 2(20) = 40°
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Jawab:
Penjelasan dengan langkah-langkah:
Besar sudut berpelurus = 180°
180 = 7x + 2x
180 = 9x
x = 180/9
x = 20
Besar sudut BOC = 2x = 2(20) = 40°