bntu kak pliiisss ....
Nilai dari a - b + c = 125
Langkah langkah
∠a = 60°
∠b = 180° - (65° + ∠a)
∠b = 180° - (65° + 60°)
∠b = 180° - 125°
∠b = 55°
∠c = ∠a + ∠b
∠c = 60° + 55°
∠c = 115°
a - b + c
= 60 - 50 + 115
= 10 + 115
= 125
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