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

NCERT Class 10 Ex 6.5

Triangles | Chapter 6 Exercise 6.5 Question 15: 

In an equilateral triangle ABC, D is a point on side BC such that BD = \frac{1}{3} 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.

class 10 chapter-6 ex 6.5 Q-15
Figure 1: Chapter 6 Exercise 6.5 Question 15 Solution

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