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In ∆ABC ,AB =6√3 cm, AC =12 cm ,BC = 6 cm. Find the measure of ∠A * |
Answer» Solution:-In ABC, AB = 6v3 cm, AC = 12 cm, BC = = = 6 cm. AB^2= (6√3)^2= 108 AC^2 = (12)^2 = 144 = BC^2 = (6)^2 = 36 108 + 36 = 144 In a triangle, if the square of one side is equal to the sum of the squares of the remaining two SIDES, then the triangle is a RIGHT angled triangle. In a right angled triangle, if one side is half of the hypotenuse then the angle opposite to that side is 30°. Here, BC is half of AC. Thus measure of angle A is 30° Hope it helps you ❤️ |
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