Penjelasan dengan langkah-langkah:
6x - 5⁰ + 4x - 15⁰ = 180⁰
10x - 20⁰ = 180⁰
10x = 180⁰ + 20⁰
x = 200⁰ / 10
= 20⁰
A1 + A2 = 180⁰
6x - 5 + A2 = 180⁰
6(20⁰) - 5⁰ + A2 = 180⁰
A2 = 180⁰ - 115⁰
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Penjelasan dengan langkah-langkah:
6x - 5⁰ + 4x - 15⁰ = 180⁰
10x - 20⁰ = 180⁰
10x = 180⁰ + 20⁰
x = 200⁰ / 10
= 20⁰
A1 + A2 = 180⁰
6x - 5 + A2 = 180⁰
6(20⁰) - 5⁰ + A2 = 180⁰
A2 = 180⁰ - 115⁰
= 65⁰ (B)