In a equilateral triangle r, R and `r_(1)` form (where symbols used have usual meaning)

In an equilateral triangle r:R:r1 is

In an equilateral triangle r:R:r_1 is

In an equilateral triangle , find ( r ) /( R )

In an equilateral DeltaABC , (where symbols used have usual meanings), then r, R and r_(1) form : i) an A.P. ii)a G.P. iii) an H.P. iv) neither an A.P., G.P. nor H.P.

In an equilateral triangle , R:r:r_2 is equal to

Show that a + r +1=1 where symbols have their usual meaning.

In an equilateral triangle ABC ,the ratio (R+4r)/(2R-r) has the value (symbols have usual meanings)

In a triangle ABC, if a=4, b=8 and angleC=60^(@) , then : (where symbols used have usual meanings)