In a `DeltaABC`, if `(2cosA)/a+(cosB)/b+(2cosC)/c=a/(bc)+b/(ca)`, prove that `angleA=90^(@)`.

If in a triangle A B C , (2cosA)/a+(cos B)/b+(2cosC)/c=a/(b c)+b/(c a) , then prove that the triangle is right angled.

If in a triangle A B C , (2cosA)/a+(cos B)/b+(2cosC)/c=a/(b c)+b/(c a) , then prove that the triangle is right angled.

If in a triangle ABC , 2(cosA)/a+(cosB)/b+2(cosC)/c=a/(bc)+b/(ca) , then the value of the angle A, is

If an a triangle A B C ,(2cosA)/a+(cosB)/b+(2cosC)/c=a/(b c)+b/(a c), find the /_A= (a) 90^0 (b) 60^0 (c) 30^0 (d) none of these

In DeltaABC , prove that: (c-bcosA)/(b-c (cosA))=(cosB)/(cosC)

If in a triangle ABC, (cosA)/a=(cosB)/b=(cosC)/c ,then the triangle is

If in a Delta A B C ,(cosA)/a=(cosB)/b=(cosC)/c , then find the measures of angles A ,\ B ,\ Cdot

In a triangle ABC, if (cosA)/a=(cosB)/b=(cosC)/c and the side a =2 , then area of triangle is

In any A B C ,2(bc cosA+ ca cosB+ab cosC) =

In DeltaABC , prove that: a(cosB+cosC)=2(b+c)sin^(2)A/2 .