Question

6. If O is any point in the interior angle of AABC, show that AB + BC + CA< 2(0A + OB + OC) A B C 7. Prove that the sum of the three altitudes of a triangle is less than the sum of three sides​

Answer 1

Answer:

$ab + bc + ca < 2(oa + ob + oc) \\ ab + bc + ca < 2oa + 2ob + 2oc$