tolong bantu yah besokkumpulkan

1.
4p + 40° = 2p - 10°
4p - 2p = -10 - 40
2p = -50
P = -25

2.
α = ½ x 90° = 45°
Sudut penyiku α = α = 45°

3.
3a + 5a + 60 = 180°
8a = 180° - 60°
8a = 120°
a = 120°/8 = 15°

AOC = 3a = 3 x 15° = 45°
BOC = 5a + 60° = (5 x 15°) + 60° = 135°