In a `/_\ABC` with usual notations `a=3, b=4, c=5` then inradius is equal to

If in triangle ABC , with usual notations , a=18,b=24,c=30 , then sin.(A)/(2) is equal to

In triangleABC , with usual notations b=2c and B=3C, then sinA=

In /_ABC with usual notations,if a,b,c are in A.P.then the numerical value of tan((A)/(2))tan((B)/(2))+tan((B)/(2))tan((C)/(2)) is

In a triangle ABC with usual notation,if a+b=3c, then tan((A)/(2))tan((B)/(2)) is equal to

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

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

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

In /_ABC with usual notation,if A=3C and acute angle between altitude from vertex A and angle bisector of vertex B is 60^(@), then