In ΔABC, if cotA2:cotB2:cotC2=3:7:9, then a:b:c=

1.	In ΔABC, if cotA2:cotB2:cotC2=3:7:9, then a:b:c=
Answer» In $Δ A B C,$ if $cot \frac{A}{2} : cot \frac{B}{2} : cot \frac{C}{2} = 3 : 7 : 9,$ then $a : b : c =$

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