Question

An equilateral triangle ABC ,AD is perpendicular to BC then find AD2

Answer 1

Hey mate here's your answer

Given- abc is an equilateral triangle

Ad is perpendicular to bc.

To find- 2 ad

We know that an equilateral triangle has all sides equal (I.e all sides are 60 degree)

In triangle ABC-

Ab=ac

Bd=bc

Bc=bc(common)

Ad=ad(common)

Ad perpendicular to bc

Also ad divides two triangle into equal halves.

So we get ad=ad

I.e 2ad

Hence proved

Hope it helps