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Question -

ΔABC में ∠B = 72°, ∠C = 64°, ∠A का ज्ञात कीजिए।



Answer -

ΔABC में ∠B = 72°, ∠C = 64°, ∠A = ?
∠A + ∠B + ∠C = 180°
∠A + 72° + 64° = 180°
∠A + 136° = 180°
∠A = 180° – 136°
∠A = 44°

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