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Jawaban:

3x + 2x +20° = 180

5x = 180-20

x = 160/5

x = 32

<C = 3x = 3(32) =96

<A = 2x = 2(32) = 64

Penjelasan dengan langkah-langkah:

total sudut segitiga = 180°

2x + 3x + 20° = 180°

5x + 20° = 180°

5x = 180° – 20°

5x = 160°

x = 160° / 5

x = 32°

sudut A = 2x = 2×32 = 64

sudut C = 3x = 3×32 = 96

semoga membantu