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

In an equilateral triangle r:R:r1 is

Explain what is meant by the equation g=Gxx(M)/(R^(2)) Where the symbols have their usual meanings.

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

In triangle ABC, if rr_(1)=r_(2)r_(3), then the triangle is

Let the centroid of an equilateral triangle ABC be at the origin. Let one of the sides of equilateral triangle be along the straight line x+y=3. If R and r be the radius of circumcircle and incircle respectively of triangleABC , then (R+r) is equal to :

In any triangle ABC, the least value of (r_(1)+r_(2)+r_(3))/(r) is

In any triangle ABC, the value of (r_(1)+r_(2))/(1+cosC) is equal to (where notation have their usual meaning) :

In DeltaABC," if " A-B=120^(@) and R=8r , then the value of (1+cosC)/(1-cosC) equals : (All symbols used hav their usual meaning in a triangle)