NCERT Solutions Class 10 Maths – Triangles | Chapter 6 Exercise – 6.5 Question 15

Triangles | Chapter 6 Exercise 6.5 Question 15: 

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

Solution: Detailed explanation of exercise 6.5 question 15 is given in the below image and YouTube video.

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