In a `Delta ABC,` the side a, b, and c are such that they are roots of `x^(3) -11x ^(2) +38x -40=0.` Then the value of `(cos A)/(a )+ (cos B)/(b)+ (cos C)/(c ).`

In a triangle ABC, if the sides a,b,c, are roots of x^3-11 x^2+38 x-40=0, then find the value of (cosA)/a+(cosB)/b+(cosC)/c

In a DeltaABC , if the sides a, b, c are the roots of the equation x^(3)-11x^(2)+38x-40=0 , then (cosA)/a+(cosB)/b+(cosC)/c=

In Delta ABC,(cos C+cos A)/(c+a)+(cos B)/(b)=

In a Delta ABC(cos C+cos A)/(c+a)+(cos B)/(b) is

If in a triangle ABC a,b,are roots of the equation x^(3)-11x^(2)+38x-40=0 then sum(cos A)/(a) equal to:

Let a,b and c be the sides of a Delta ABC. If a^(2),b^(2) and c^(2) are the roots of the equation x^(3)-Px^(2)+Qx-R=0, where P,Q&R are constants,then find the value of (cos A)/(a)+(cos B)/(b)+(cos C)/(c) in terms of P,Q and R.

In a Delta ABC, the value of (a cos A+b cos B+c cos C)/(a+b+c) is equal to

In a Delta ABC,a=5,b=3 and c=7, then the value of 3cos C+7cos B is equal to