" 1."(c-acosB)/(b-acosC)=

In any DeltaABC , prove that: (sinB)/(sinC)=(c-acosB)/(b-acosC)

In any DeltaABC , prove that, (sinB)/(sinC)=(c-acosB)/(b-acosC) .

In a triangle ABC , with usual notations , prove that (a-bcosC)/(b-acosC)=(cosB)/(cosA) .

In a triangle ABC , if a,b,c are the sides opposite to angles A , B , C respectively, then the value of |{:(bcosC,a,c cosB),(c cosA,b,acosC),(acosB,c,bcosA):}| is

In any Delta A B C , prove that: (cosA)/(bcosC+c cosB)+(cosB)/(c cosA+acosC)+(cosC)/(acosB+bcosA)=(a^2+b^2+c^2)/(2a b c)

In a triangle ABC , if a,b,c are the sides opposite to angles A , B , C respectively, then the value of |{:(bcosC,a,c cosB),(c cosA,b,acosC),(acosB,c,bcosA):}| is

In a triangle ABC , if a,b,c are the sides opposite to angles A , B , C respectively, then the value of |{:(bcosC,a,c cosB),(c cosA,b,acosC),(acosB,c,bcosA):}| is

In a triangle ABC, if a,b,c are the sides opposite to angles A,B,C respectively,then value of |(bcosC,a,c cosB),(c cosA,b,acosC),(acosB,c,bcosA)| is a)1 b)-1 c)0 d)a cos A + b cos B + cos C

In a triangle ABC , if a,b,c are the sides opposite to angles A , B , C respectively, then the value of |{:(bcosC,a,c cosB),(c cosA,b,acosC),(acosB,c,bcosA):}| is (a) 1 (b) -1 (c) 0 (d) acosA+bcosB+c cosC

Prove that b(c cosA-acosC)=c^2-a^2