" If "r:R:r_(1)=2:5:12," then "A=

In A B C , if r\ : r_1: R=2\ : 12\ :5, where all symbols have their usual meaning, then A B C is an acute angled triangle A B C is an obtuse angled triangle A B C is right angled which is not isosceles A B C is isosceles which is not right angled

In A B C , if r\ : r_1: R=2\ : 12\ :5, where all symbols have their usual meaning, then A B C is an acute angled triangle A B C is an obtuse angled triangle A B C is right angled which is not isosceles A B C is isosceles which is not right angled

If ""^(12)C_(5) =^(12)C_(r) then r=_____

In a !ABC if r_(1) = 8, r_(2) = 12 and r_(3) = 24, then a =

If r_(1)=8, r_(2)= 12r_(3)=24 then C=

In Delta ABC, if r_1=36, r_2=18, r_3=12 , then R=

If ""^(n)C_(r-1):""^(n)C_(r):""^(n)C_(r+1)=2:4:5 then (n,r) is

If R is a relation on the set A={1,2,3} given by R={(1,1),(1,2),(2,1)} , then R is

Let A={1,2,3} and R be a relation defined on A, such that, R{(1,2),(2,1)}, then the relation R will be