Question

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Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

Diketahui :

∠ADB = (2x + 15)°

∠BDC = (3x + 20)°

Ditanya : ∠ADB ...?

Penyelesaian :

∠ADB + ∠BDC = 180° (Sudut Berpelurus)

2x + 15° + 3x + 20° = 180°

5x + 35° = 180°

5x = 145°

x = 29°

∠ADB = 2x + 15°

= 2(29°) + 15°

= 58° + 15°

= 73°

TerimaKasih

Semoga Membantu :)

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