1.

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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