Class 10 maths chapter 6 exercise 6.5 Q. 15 solution | Class X NCERT Solutions | In an equilateral triangle ABC, D is a point on side BC such that BD = 1/3 BC. Prove that 9 AD² =7 AB².

 Q. 15) In an equilateral triangle ABC, D is a point on side BC such that BD = 1/3 BC. Prove that 9 AD² =7 AB².

Solution:

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