Jawab:
x= 48°
Penjelasan dengan langkah-langkah:
Diketahui :
C= 31 °
A = (2x + 15)°
B = (x-10)°
Jumlah sudut dalam segituga 180°
A+B+C = 180°
2x + 15 + x -10 + 31 = 180°
2x + x = 180° - 15 +10 - 31
3x = 144
x = 144/3
Pembuktian
A = 2x+15
A = (2x48)+15
A = 96 + 15
A = 111 °
B = x - 10
B = 48 - 10
B = 38°
A + B + C = 180°
111 ° + 38° + 31° = 180°
180° = 180°
Terbukti.
Semoga terbantu.
Jumlah sudut ∆ = 180°
Nilai x
[tex]2x° + 15° + x° - 10° + 31 °= 180° \\ 3x° + 36°= 180° \\ 3x° = 180° - 36° \\ x = \frac{144°}{3} \\ x = 48°[/tex]
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Jawab:
x= 48°
Penjelasan dengan langkah-langkah:
Diketahui :
C= 31 °
A = (2x + 15)°
B = (x-10)°
Jumlah sudut dalam segituga 180°
A+B+C = 180°
2x + 15 + x -10 + 31 = 180°
2x + x = 180° - 15 +10 - 31
3x = 144
x = 144/3
x= 48°
Pembuktian
A = 2x+15
A = (2x48)+15
A = 96 + 15
A = 111 °
B = x - 10
B = 48 - 10
B = 38°
A + B + C = 180°
111 ° + 38° + 31° = 180°
180° = 180°
Terbukti.
Semoga terbantu.
Jumlah sudut ∆ = 180°
Nilai x
[tex]2x° + 15° + x° - 10° + 31 °= 180° \\ 3x° + 36°= 180° \\ 3x° = 180° - 36° \\ x = \frac{144°}{3} \\ x = 48°[/tex]