" 8.किसी त्रिभुज "ABC" में सिद्ध कीजिए कि "(c-b cos A)/(b-c cos A)=(cos B)/(cos C)

In Delta ABC, prove that :(c-b cos A)/(b-c cos A)=(cos B)/(cos C)

In a ABC, prove the following: (c-b cos A)/(b-c cos A)=(cos B)/(cos C)

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

In Delta ABC,a(b cos C-c cos B)=

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

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

सिद्ध कीजिए कि 2tan^(-1)sqrt((b)/(a))=cos^(-1)((a-b)/(a+b))

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

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)

In a triangle ABC, cos A+cos B+cos C=