In an equilateral triangle ABC, D is a point on side BC such that BD=1/3BC. Proove that 9AD²=7AB².

In an equilateral triangle ABC, D is a point on side BC such that BD=1

1.	In an equilateral triangle ABC, D is a point on side BC such that BD=1/3BC. Proove that 9AD²=7AB².
Answer» Bina diagram nhi hoga