Jawab:
(5a + 4)° + (7a + 8)° = 180°
(5a + 7a)° + (4+8)° = 180°
(5a + 7a)° + 12° = 180°
(5a + 7a)° = 180° - 12°
(5a + 7a)° = 168°
12a° = 168°
a =
a = 14°
Sudut ABD = (5a + 4)°
= (5 x 14)° + 4°
= 70° + 4°
= 74°
semoga membantu, jadikan yang terbaik :D
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Jawab:
(5a + 4)° + (7a + 8)° = 180°
(5a + 7a)° + (4+8)° = 180°
(5a + 7a)° + 12° = 180°
(5a + 7a)° = 180° - 12°
(5a + 7a)° = 168°
12a° = 168°
a =
a = 14°
Sudut ABD = (5a + 4)°
= (5 x 14)° + 4°
= 70° + 4°
= 74°
semoga membantu, jadikan yang terbaik :D