" In "ABC,a(cos^(2)B+cos^(3)C)+cos A(c cos C+b cos B)=

In a Delta ABC,a(cos^(2)B+cos^(2)C)+cos A(c cos C+b cos B)=

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

In a Delta ABC, a (cos^2 B+cos^2 C)+cos A(c cos C+b cos B)=

In any triangle ABC, the valur of a (cos ^(2) B+ cos ^(2)C)+ cos A (b cos B+ c cos C) is-

If : A+B+C=pi, "then" : 1-cos^(2) A-cos^(2)B-cos^(2)C= A) 2 cos A * cos B * cos C B) 2 sin A * cos B * cos C C) 2 cos A * sin B * cos C D) 2 cos A * cos B * sin C

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

In a Delta ABC,(cos A cos B)/(ab)+(cos B cos C)/(bc)+(cos C cos A)/(ca) is equal to

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

In any Delta ABC, prove that : (cos A)/(b cos C+c cos B)+(cos B)/(c cos A+a cos C)+(cos C)/(c cos B+b cos A)=(a^(2)+b^(2)+c^(2))/(2abc)