Jawaban:
A. 15°
Penjelasan dengan langkah-langkah:
180° = 3a + 4a + 75°
180°- 75° = 7a
105° = 7a
105/7 = a
15°= a
Penjelasan dengan langkah langkah :
Besar sudut segitiga = 180°
3a + 4a = 180° - 75°
7a = 105
a = 105/7
a = 15°
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Jawaban:
A. 15°
Penjelasan dengan langkah-langkah:
180° = 3a + 4a + 75°
180°- 75° = 7a
105° = 7a
105/7 = a
15°= a
Jawaban:
A. 15°
Penjelasan dengan langkah langkah :
Besar sudut segitiga = 180°
180° = 3a + 4a + 75°
3a + 4a = 180° - 75°
7a = 105
a = 105/7
a = 15°