pada gambar di bawah ini, tentukan nilai x, y dan z
(yang gambar nya ada a dan B)
(yang gambar nya ada a dan B)
a. (x - 50) + (x - 50) = 180°
2x + 100 = 180°
2x = 180 - 100
x = 80/2
x = 40°
y = 50 + 40 = 90°
z = 50 - 40 = 10°
b. 5x - 80° = 2x - 10°
5x - 2x = 80 + 10
3x = 90
x = 90/3
x = 30°
y = z = 180 - 5(90/3) + 80
y = z = 260 - 450/3
y = z = (780 - 450/3)
y = z = 330/3
y = z = 110/⅓°
Penjelasan dengan langkah-langkah:
a. (x - 50) + (x + 50) = 180
2x = 180
x = 180/2
x = 90°
y = 50 + 90 = 140°
z = 90 - 50 = 40°
b. 5x - 80 = 2x - 10
5x - 2x = 80 - 10
3x = 70
x = 70/3
x = 23⅓°
y = z = 180 - 5(70/3) +80
y = z = 260 - 350/3
y = z = (780 - 350)/3
y = z = 430/3
y = z = 143⅓°
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