MCQ
In ΔABC, if (a+ b - c)(a + b + c) = 3ab, then ______.
- A∠A + ∠B = 90°
- ✓∠A + ∠B = 120°
- C∠A + ∠B = 60°
- D∠A + ∠B = 150°
✓
Answer
Correct option: B.
∠A + ∠B = 120°
B
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