exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication
We hve that ax = by = cz;
And we have to prove that x²/yz+y²/zx+z²/xy=bc/a²+ca/b²+ab/c²
Question 18, exercise 7.2
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Solution:
Consider ax = by = cz = k
It can be written as
x = k/a, y = k/b, z = k/c