This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion.
It is given that a/b = c/d = e/f
And we hve to prove that: (i) (b2 + d2 + f2) (a2 + c2 + e2) = (ab + cd + ef)2
Question 17, exercise 7.2
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