In an isosceles triangle ΔABC, AB = AC. Each equal angle is 5° more than 3/4 of the third angle. Find the value of (3∠A − ∠B).

Subject: Mathematics | Topic: Trigonometry | Difficulty: MEDIUM

Options

1. (A) 120°
2. (B) 90°
3. (C) 148°
4. (D) 75°

Verified Answer

Option (C): 148°

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