In `DeltaABC` with usual notations, if `r = 1, r_(1) = 7 and R = 3, " then " DeltaABC` is

In DeltaABC with usual notations if r=1, r_(1)=7 and R=3, the DeltaABC is

In ABC with usual notations,if r=1,r_(1)=7 and R=3, the ABC is equilateral (b) acute angled which is not equilateral obtuse angled (d) right angled

In DeltaABC with usual notation, (c-b cos A)/(a) is equal to

In Delta ABC with usual notation r_1/(bc)+r_2/(ca)+r_3/(ab) is

In Delta ABC with usual notation r_1/(bc)+r_2/(ca)+r_3/(ab) is

In DeltaABC , with usual notations, if cosA=(sinB)/(sinC) , then the triangle is

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

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 DeltaABC if r_(1)=R then

In a DeltaABC ,with usual notations, (a)/(3)=(b)/(4)=(c)/(5) then triangle is