MCQ
If $(b+c),(c+a),(a+b)$ are in $H.P$ , then $a^2,b^2,c^2$ are in.......
- ✓$A.P.$
- B$G.P.$
- C$H.P.$
- DNone
✓
Answer
Correct option: A.
$A.P.$
a
$(b+c)^{-1}, (c+a)^{-1}, (a+b)^{-1}$ are in $A.P$ so by using properties of $AP$ , we can show that $2b^2= a^2+b^2$
$(b+c)^{-1}, (c+a)^{-1}, (a+b)^{-1}$ are in $A.P$ so by using properties of $AP$ , we can show that $2b^2= a^2+b^2$
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