In an equilateral triangle, the in-radius, circum-radius and one of the ex-radii are in the ratio

In an equilateral triangle,the in-radius and circumradius are in the ratio

In an equilateral triangle the in-radius and the circum-radius are connected by

In an equilateral triangle the ratio of circum-radius and in-radius is

In an equilateral triangle the ratio of circum-radius and in-radius is

In equilateral triangle , ratio of inradius ,circum radii and exadii is :-

For an equilateral triangle, the ratio of the inradius and the outer-radius is

In an equilateral triangle, inradius r , circumradius R and ex-radius r_1 are in A.P. (b) G.P. (c) H.P. (d) none of these