सिध्द कीजिए कि त्रिभुज ABC में (b+c) ...

सिध्द कीजिए कि त्रिभुज ABC में
`(b+c) cos A + (C+a) cos B +(a +b) cos C=a+ b+c`

Similar Questions

Explore conceptually related problems

In any triangle ABC, prove that : (b + c) cos A + (c + a) cos B + (a + b) cos C=a+b+c .

( a cos A + b cos B + c cos C )/( a +b +c ) =

In any o+ABC, prove that: (b+c)cos A+(c+a)cos B+(a+b)cos C=a+b+c

In triangle ABC , prove that (b+c)cos A +(c+a)cos B +(a+b)cos C=a+b+c .

In triangle ABC , a (b^2 +c^2 ) cos A + b (c^2 +a^2 ) cos B + c(a^2 +b^2 ) cos C is equal to

In any A B C , prove that: (b+c)cos A+(c+a)cos B+(a+b)cos C=a+b+c

In any Delta ABC, prove that :(b+c)cos A+(c+a)cos B+(a+b)cos C=a+b+c

in a triangle ABC , (b+c) ( bc ) cos A + (a +c) (ac) cos B + ( a+b) (ab) cos C Is

(c-b cos A)/(b-c cos A)=(cos B)/(cos C)

In /_\ABC ,Prove that a cos A + b cos B + c cos C = 2a sin B sin C