Cari nilai x terlebih dahulu
∠A + ∠B = 180°
(4x + 15°) + (x + 15°) = 180°
4x + x = 180° - 15° - 15°
5x = 150°
x = 150° / 5
x = 30°
Setelah nilai x diperoleh, substitusikan nilai x ke dalam persamaan ∠A
∠A = 4x + 15°
∠A = (4×30°) + 15°
∠A = 120° + 15°
∠A = 135°
Semoga membantu! :)
Materi : Garis dan Sudut
∠B = x + 15°
---
4x + 15° + x + 15° = 180°
5x + 30° = 180°
∠A = 4x + 15° = 4(30°) + 15° = 120° + 15° = 135°
Semoga bisa membantu
[tex] \boxed{ \colorbox{darkblue}{ \sf{ \color{lightblue}{ answered\:by\: BLUEBRAXGEOMETRY}}}} [/tex]
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Verified answer
Cari nilai x terlebih dahulu
∠A + ∠B = 180°
(4x + 15°) + (x + 15°) = 180°
4x + x = 180° - 15° - 15°
5x = 150°
x = 150° / 5
x = 30°
Setelah nilai x diperoleh, substitusikan nilai x ke dalam persamaan ∠A
∠A = 4x + 15°
∠A = (4×30°) + 15°
∠A = 120° + 15°
∠A = 135°
Semoga membantu! :)
Materi : Garis dan Sudut
∠A = 4x + 15°
∠B = x + 15°
---
∠A + ∠B = 180°
4x + 15° + x + 15° = 180°
5x + 30° = 180°
5x = 150°
x = 30°
Kesimpulan
∠A = 4x + 15° = 4(30°) + 15° = 120° + 15° = 135°
Semoga bisa membantu
[tex] \boxed{ \colorbox{darkblue}{ \sf{ \color{lightblue}{ answered\:by\: BLUEBRAXGEOMETRY}}}} [/tex]