Jika B = 2 X dan C = 3 X, serta jumlah ABC = 180 Tentukan : 1. Nilai sudut A = 2. Besar sudut C = 3. Besar sudut B = 4. Besar sudut A =

A + B + C = 180
x + 2x + 3x = 180
6x = 180
x = 180 : 6
x = 30

1. nilai a = x = 30
2. besar sudut c = 2x = 2(30)
C = 60°
3. besar sudut b = 3x = 3(30)
b = 90°
4. besar sudut a = 30°
#sorry kalo salah