Jawaban:
sudut A + sudut B + sudut C = 180°
sudut A + sudut C = 180° - 30°
= 150°
A : C : (A+C) = 1 : 2 : (1+2)
= 1 : 2 : 3
C : (A+C) = 2 : 3
C : 150° = 2 : 3
3C = 2 × 150°
C = 300° ÷ 3
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Verified answer
Jawaban:
sudut A + sudut B + sudut C = 180°
sudut A + sudut C = 180° - 30°
= 150°
A : C : (A+C) = 1 : 2 : (1+2)
= 1 : 2 : 3
C : (A+C) = 2 : 3
C : 150° = 2 : 3
3C = 2 × 150°
C = 300° ÷ 3
= 150°