" In a "Delta ABC" ,show that "r_(1)r_(2)r_(3)=Delta^(2)" ."

Show that rr_(1)r_(2)r_(3)=Delta^(2)

In any Delta ABC, prove that r.r_(1).r_(2).r_(3)=Delta^(2)

Show that r r_1 r_2 r_3 = Delta^2

In Delta ABC , show that: (r_(1)+r_(2)) sec^(2) ""(C)/(2) = (r_(2) +r_(3)) sec^(2) ""(A)/(2) =(r_(3)+r_(1)) sec^(2)""(B)/(2)

In a Delta ABC if r+r_(1)+r_(2)-r_(3)=lambda^(2)R cos C then lambda is

In a Delta^("le") ABC if r_(1)=2r_(2)=3r_(3) then

If in a Delta ABC, if r_(1)=3,r_(2)=10,r_(3)=15 then R=