Jawaban:
Penjelasan dengan langkah-langkah:
Besar sudut : x + 45° , 3x , 2x - 15°
Sudut 1 puataran penuh (360°), sehingga
x + 45° + 3x + 2x - 15° = 360°
x + 3x + 2x + 45° - 15° = 360°
6x + 30° = 360°
6x = 330°
x = 330°/6
x = 55°
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Jawaban:
B. x = 55°
Penjelasan dengan langkah-langkah:
Diketahui :
Besar sudut : x + 45° , 3x , 2x - 15°
Ditanya : Nilai x ?
Dijawab :
Sudut 1 puataran penuh (360°), sehingga
x + 45° + 3x + 2x - 15° = 360°
x + 3x + 2x + 45° - 15° = 360°
6x + 30° = 360°
6x = 330°
x = 330°/6
x = 330°/6
x = 55°
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