If `I_1, I_2,I_3 and I` are the excenter and incentres of `DeltaABC` respectively, then `(II_1)).(II_2).(II_3)=`

If I_(1),I_(2),I_(3) and I are the excenter and incentres of Delta ABC respectively,then (II_(1))).(II_(2))*(II_(3))=

If I is the incentre and I _1,I _2,I _3 are the centre of escribed circles of the triangleABC . Prove that II_1.II_2.II_3 = 16 R^2r .

If 1 is the incentre and I_1,I_2,I_3 are the centre of escribed circles of the triangleABC . Prove that II_(1)^(2)+I_2I_(3)^(2)= II_(2)^(2)+I_(3)I_(1)^(2)= I_(1)I_(2)^(2)+II_(3)^(2)

I,I_(1),I_(2),I_(3) are the in centre and excentres of Delta ABC .If I(0,0),I_(1)(2,3),I_(2)(5,7) then the, distance between the orthocentres of Delta II_(1)I_(3) and Delta I_(1)I_(2)I_(3)" is

In a triangle ABC I_1, I_2,I_3 are excentre of triangle then show that II_(1). II_(2). II_(3)=16R^(2)r.

In a triangle ABC I_1, I_2,I_3 are excentre of triangle then show that II_(1). II_(2). II_(3)=16R^(2)r.

In a triangle ABC I_1, I_2,I_3 are excentre of triangle then show that II_(1). II_(2). II_(3)=16R^(2)r.

If in triangle ABC,sum sin(A)/(2)=(6)/(5) and sum II_(1)=9 (where I_(1),I_(2) and I_(3) are excenters and I is incenter, then circumradius R is equal to (15)/(8) (b) (15)/(4) (c) (15)/(2) (d) (4)/(12)

In a Delta ABC , if (II_(1))^(2)+(I_(2)I_(3))^(2)=lambda R^(2) , where I denotes incentre, I_(1),I_(2) and I_(3) denote centres of the circles escribed to the sides BC, CA and AB respectively and R be the radius of the circum circle of DeltaABC . Find lambda .