In a `/_\ABC` (with usual notations) if ex-radii `r_(1)` ,`r_(2)` ,`r_(3)` are in H.P then `(a+c)/b` is

With usual notation in Delta ABC,(rr_(1))/(r_(2)r_(3)) is equal to

In DeltaABC ,with usual notations r_(1),r_(2),r_(3) are in harmonic progression. If area of Delta ABC is 24 and perimeter is 24 then length of its sides are

In Delta ABC with usual notation (r_(1))/(bc)+(r_(2))/(ac)+(r_(3))/(ab) is:

The exradii r_(1),r_(2) and r_(3) of /_ABC are in H.P.Show that its sides a,bandc are in AP .

If r_(1), r_(2), r_(3) in triangle be in H.P., then the sides are :

In Delta ABC with usual notation (r_(1))/(bc)+(r_(2))/(ca)+(r_(3))/(ab) is

In triangleABC ,with usual notations r_(1),r_(2),r_(3) are in harmonic progression if area of triangleABC is 24 and perimeter is 24 then length of its sides are

If a,b,c are in AP, then show that r_(1), r_(2), r_(3) are in HP.